diff --git a/modelscope/metainfo.py b/modelscope/metainfo.py
index 24f2f748..153ca9b4 100644
--- a/modelscope/metainfo.py
+++ b/modelscope/metainfo.py
@@ -11,6 +11,7 @@ class Models(object):
     """
     # vision models
     detection = 'detection'
+    realtime_object_detection = 'realtime-object-detection'
     scrfd = 'scrfd'
     classification_model = 'ClassificationModel'
     nafnet = 'nafnet'
@@ -111,6 +112,7 @@ class Pipelines(object):
     image_super_resolution = 'rrdb-image-super-resolution'
     face_image_generation = 'gan-face-image-generation'
     product_retrieval_embedding = 'resnet50-product-retrieval-embedding'
+    realtime_object_detection = 'cspnet_realtime-object-detection_yolox'
     face_recognition = 'ir101-face-recognition-cfglint'
     image_instance_segmentation = 'cascade-mask-rcnn-swin-image-instance-segmentation'
     image2image_translation = 'image-to-image-translation'
diff --git a/modelscope/models/cv/__init__.py b/modelscope/models/cv/__init__.py
index 227be2c7..74451c31 100644
--- a/modelscope/models/cv/__init__.py
+++ b/modelscope/models/cv/__init__.py
@@ -7,5 +7,5 @@ from . import (action_recognition, animal_recognition, body_2d_keypoints,
                image_reid_person, image_semantic_segmentation,
                image_to_image_generation, image_to_image_translation,
                object_detection, product_retrieval_embedding,
-               salient_detection, super_resolution,
+               realtime_object_detection, salient_detection, super_resolution,
                video_single_object_tracking, video_summarization, virual_tryon)
diff --git a/modelscope/models/cv/realtime_object_detection/__init__.py b/modelscope/models/cv/realtime_object_detection/__init__.py
new file mode 100644
index 00000000..aed13cec
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/__init__.py
@@ -0,0 +1,21 @@
+# Copyright (c) Alibaba, Inc. and its affiliates.
+from typing import TYPE_CHECKING
+
+from modelscope.utils.import_utils import LazyImportModule
+
+if TYPE_CHECKING:
+    from .realtime_detector import RealtimeDetector
+else:
+    _import_structure = {
+        'realtime_detector': ['RealtimeDetector'],
+    }
+
+    import sys
+
+    sys.modules[__name__] = LazyImportModule(
+        __name__,
+        globals()['__file__'],
+        _import_structure,
+        module_spec=__spec__,
+        extra_objects={},
+    )
diff --git a/modelscope/models/cv/realtime_object_detection/realtime_detector.py b/modelscope/models/cv/realtime_object_detection/realtime_detector.py
new file mode 100644
index 00000000..b147f769
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/realtime_detector.py
@@ -0,0 +1,85 @@
+import argparse
+import logging as logger
+import os
+import os.path as osp
+import time
+
+import cv2
+import json
+import torch
+
+from modelscope.metainfo import Models
+from modelscope.models.base.base_torch_model import TorchModel
+from modelscope.models.builder import MODELS
+from modelscope.preprocessors import LoadImage
+from modelscope.utils.config import Config
+from modelscope.utils.constant import ModelFile, Tasks
+from .yolox.data.data_augment import ValTransform
+from .yolox.exp import get_exp_by_name
+from .yolox.utils import postprocess
+
+
+@MODELS.register_module(
+    group_key=Tasks.image_object_detection,
+    module_name=Models.realtime_object_detection)
+class RealtimeDetector(TorchModel):
+
+    def __init__(self, model_dir: str, *args, **kwargs):
+        super().__init__(model_dir, *args, **kwargs)
+        self.config = Config.from_file(
+            os.path.join(self.model_dir, ModelFile.CONFIGURATION))
+
+        # model type
+        self.exp = get_exp_by_name(self.config.model_type)
+
+        # build model
+        self.model = self.exp.get_model()
+        model_path = osp.join(model_dir, ModelFile.TORCH_MODEL_BIN_FILE)
+        ckpt = torch.load(model_path, map_location='cpu')
+
+        # load the model state dict
+        self.model.load_state_dict(ckpt['model'])
+        self.model.eval()
+
+        # params setting
+        self.exp.num_classes = self.config.num_classes
+        self.confthre = self.config.conf_thr
+        self.num_classes = self.exp.num_classes
+        self.nmsthre = self.exp.nmsthre
+        self.test_size = self.exp.test_size
+        self.preproc = ValTransform(legacy=False)
+
+    def inference(self, img):
+        with torch.no_grad():
+            outputs = self.model(img)
+        return outputs
+
+    def forward(self, inputs):
+        return self.inference(inputs)
+
+    def preprocess(self, img):
+        img = LoadImage.convert_to_ndarray(img)
+        height, width = img.shape[:2]
+        self.ratio = min(self.test_size[0] / img.shape[0],
+                         self.test_size[1] / img.shape[1])
+
+        img, _ = self.preproc(img, None, self.test_size)
+        img = torch.from_numpy(img).unsqueeze(0)
+        img = img.float()
+
+        return img
+
+    def postprocess(self, input):
+        outputs = postprocess(
+            input,
+            self.num_classes,
+            self.confthre,
+            self.nmsthre,
+            class_agnostic=True)
+
+        if len(outputs) == 1:
+            bboxes = outputs[0][:, 0:4].cpu().numpy() / self.ratio
+            scores = outputs[0][:, 5].cpu().numpy()
+            labels = outputs[0][:, 6].cpu().int().numpy()
+
+        return bboxes, scores, labels
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/__init__.py b/modelscope/models/cv/realtime_object_detection/yolox/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/data/__init__.py b/modelscope/models/cv/realtime_object_detection/yolox/data/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/data/data_augment.py b/modelscope/models/cv/realtime_object_detection/yolox/data/data_augment.py
new file mode 100644
index 00000000..b52a65fe
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/data/data_augment.py
@@ -0,0 +1,69 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+"""
+Data augmentation functionality. Passed as callable transformations to
+Dataset classes.
+
+The data augmentation procedures were interpreted from @weiliu89's SSD paper
+http://arxiv.org/abs/1512.02325
+"""
+
+import math
+import random
+
+import cv2
+import numpy as np
+
+from ..utils import xyxy2cxcywh
+
+
+def preproc(img, input_size, swap=(2, 0, 1)):
+    if len(img.shape) == 3:
+        padded_img = np.ones(
+            (input_size[0], input_size[1], 3), dtype=np.uint8) * 114
+    else:
+        padded_img = np.ones(input_size, dtype=np.uint8) * 114
+
+    r = min(input_size[0] / img.shape[0], input_size[1] / img.shape[1])
+    resized_img = cv2.resize(
+        img,
+        (int(img.shape[1] * r), int(img.shape[0] * r)),
+        interpolation=cv2.INTER_LINEAR,
+    ).astype(np.uint8)
+    padded_img[:int(img.shape[0] * r), :int(img.shape[1] * r)] = resized_img
+
+    padded_img = padded_img.transpose(swap)
+    padded_img = np.ascontiguousarray(padded_img, dtype=np.float32)
+    return padded_img, r
+
+
+class ValTransform:
+    """
+    Defines the transformations that should be applied to test PIL image
+    for input into the network
+
+    dimension -> tensorize -> color adj
+
+    Arguments:
+        resize (int): input dimension to SSD
+        rgb_means ((int,int,int)): average RGB of the dataset
+            (104,117,123)
+        swap ((int,int,int)): final order of channels
+
+    Returns:
+        transform (transform) : callable transform to be applied to test/val
+        data
+    """
+
+    def __init__(self, swap=(2, 0, 1), legacy=False):
+        self.swap = swap
+        self.legacy = legacy
+
+    # assume input is cv2 img for now
+    def __call__(self, img, res, input_size):
+        img, _ = preproc(img, input_size, self.swap)
+        if self.legacy:
+            img = img[::-1, :, :].copy()
+            img /= 255.0
+            img -= np.array([0.485, 0.456, 0.406]).reshape(3, 1, 1)
+            img /= np.array([0.229, 0.224, 0.225]).reshape(3, 1, 1)
+        return img, np.zeros((1, 5))
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/__init__.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/__init__.py
new file mode 100644
index 00000000..e8e3be15
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/__init__.py
@@ -0,0 +1,5 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+from .base_exp import BaseExp
+from .build import get_exp_by_name
+from .yolox_base import Exp
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/base_exp.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/base_exp.py
new file mode 100644
index 00000000..a4278cbf
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/base_exp.py
@@ -0,0 +1,12 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+from abc import ABCMeta, abstractmethod
+
+from torch.nn import Module
+
+
+class BaseExp(metaclass=ABCMeta):
+
+    @abstractmethod
+    def get_model(self) -> Module:
+        pass
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/build.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/build.py
new file mode 100644
index 00000000..4858100c
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/build.py
@@ -0,0 +1,18 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import os
+import sys
+
+
+def get_exp_by_name(exp_name):
+    exp = exp_name.replace('-',
+                           '_')  # convert string like "yolox-s" to "yolox_s"
+    if exp == 'yolox_s':
+        from .default import YoloXSExp as YoloXExp
+    elif exp == 'yolox_nano':
+        from .default import YoloXNanoExp as YoloXExp
+    elif exp == 'yolox_tiny':
+        from .default import YoloXTinyExp as YoloXExp
+    else:
+        pass
+    return YoloXExp()
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/default/__init__.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/__init__.py
new file mode 100644
index 00000000..552bbccd
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/__init__.py
@@ -0,0 +1,5 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+from .yolox_nano import YoloXNanoExp
+from .yolox_s import YoloXSExp
+from .yolox_tiny import YoloXTinyExp
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_nano.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_nano.py
new file mode 100644
index 00000000..330eef16
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_nano.py
@@ -0,0 +1,46 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import os
+
+import torch.nn as nn
+
+from ..yolox_base import Exp as YoloXExp
+
+
+class YoloXNanoExp(YoloXExp):
+
+    def __init__(self):
+        super(YoloXNanoExp, self).__init__()
+        self.depth = 0.33
+        self.width = 0.25
+        self.input_size = (416, 416)
+        self.test_size = (416, 416)
+
+    def get_model(self, sublinear=False):
+
+        def init_yolo(M):
+            for m in M.modules():
+                if isinstance(m, nn.BatchNorm2d):
+                    m.eps = 1e-3
+                    m.momentum = 0.03
+
+        if 'model' not in self.__dict__:
+            from ...models import YOLOX, YOLOPAFPN, YOLOXHead
+            in_channels = [256, 512, 1024]
+            # NANO model use depthwise = True, which is main difference.
+            backbone = YOLOPAFPN(
+                self.depth,
+                self.width,
+                in_channels=in_channels,
+                act=self.act,
+                depthwise=True,
+            )
+            head = YOLOXHead(
+                self.num_classes,
+                self.width,
+                in_channels=in_channels,
+                act=self.act,
+                depthwise=True)
+            self.model = YOLOX(backbone, head)
+
+        return self.model
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_s.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_s.py
new file mode 100644
index 00000000..5a123b37
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_s.py
@@ -0,0 +1,13 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import os
+
+from ..yolox_base import Exp as YoloXExp
+
+
+class YoloXSExp(YoloXExp):
+
+    def __init__(self):
+        super(YoloXSExp, self).__init__()
+        self.depth = 0.33
+        self.width = 0.50
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_tiny.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_tiny.py
new file mode 100644
index 00000000..a80d0f2d
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/default/yolox_tiny.py
@@ -0,0 +1,20 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import os
+
+from ..yolox_base import Exp as YoloXExp
+
+
+class YoloXTinyExp(YoloXExp):
+
+    def __init__(self):
+        super(YoloXTinyExp, self).__init__()
+        self.depth = 0.33
+        self.width = 0.375
+        self.input_size = (416, 416)
+        self.mosaic_scale = (0.5, 1.5)
+        self.random_size = (10, 20)
+        self.test_size = (416, 416)
+        self.exp_name = os.path.split(
+            os.path.realpath(__file__))[1].split('.')[0]
+        self.enable_mixup = False
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/exp/yolox_base.py b/modelscope/models/cv/realtime_object_detection/yolox/exp/yolox_base.py
new file mode 100644
index 00000000..a2a41535
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/exp/yolox_base.py
@@ -0,0 +1,59 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import os
+import random
+
+import torch
+import torch.distributed as dist
+import torch.nn as nn
+
+from .base_exp import BaseExp
+
+
+class Exp(BaseExp):
+
+    def __init__(self):
+        super().__init__()
+
+        # ---------------- model config ---------------- #
+        # detect classes number of model
+        self.num_classes = 80
+        # factor of model depth
+        self.depth = 1.00
+        # factor of model width
+        self.width = 1.00
+        # activation name. For example, if using "relu", then "silu" will be replaced to "relu".
+        self.act = 'silu'
+        # -----------------  testing config ------------------ #
+        # output image size during evaluation/test
+        self.test_size = (640, 640)
+        # confidence threshold during evaluation/test,
+        # boxes whose scores are less than test_conf will be filtered
+        self.test_conf = 0.01
+        # nms threshold
+        self.nmsthre = 0.65
+
+    def get_model(self):
+        from ..models import YOLOX, YOLOPAFPN, YOLOXHead
+
+        def init_yolo(M):
+            for m in M.modules():
+                if isinstance(m, nn.BatchNorm2d):
+                    m.eps = 1e-3
+                    m.momentum = 0.03
+
+        if getattr(self, 'model', None) is None:
+            in_channels = [256, 512, 1024]
+            backbone = YOLOPAFPN(
+                self.depth, self.width, in_channels=in_channels, act=self.act)
+            head = YOLOXHead(
+                self.num_classes,
+                self.width,
+                in_channels=in_channels,
+                act=self.act)
+            self.model = YOLOX(backbone, head)
+
+        self.model.apply(init_yolo)
+        self.model.head.initialize_biases(1e-2)
+        self.model.train()
+        return self.model
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/__init__.py b/modelscope/models/cv/realtime_object_detection/yolox/models/__init__.py
new file mode 100644
index 00000000..20b1a0d1
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/__init__.py
@@ -0,0 +1,7 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+from .darknet import CSPDarknet, Darknet
+from .yolo_fpn import YOLOFPN
+from .yolo_head import YOLOXHead
+from .yolo_pafpn import YOLOPAFPN
+from .yolox import YOLOX
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/darknet.py b/modelscope/models/cv/realtime_object_detection/yolox/models/darknet.py
new file mode 100644
index 00000000..8ece2a1e
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/darknet.py
@@ -0,0 +1,189 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+from torch import nn
+
+from .network_blocks import (BaseConv, CSPLayer, DWConv, Focus, ResLayer,
+                             SPPBottleneck)
+
+
+class Darknet(nn.Module):
+    # number of blocks from dark2 to dark5.
+    depth2blocks = {21: [1, 2, 2, 1], 53: [2, 8, 8, 4]}
+
+    def __init__(
+            self,
+            depth,
+            in_channels=3,
+            stem_out_channels=32,
+            out_features=('dark3', 'dark4', 'dark5'),
+    ):
+        """
+        Args:
+            depth (int): depth of darknet used in model, usually use [21, 53] for this param.
+            in_channels (int): number of input channels, for example, use 3 for RGB image.
+            stem_out_channels (int): number of output channels of darknet stem.
+                It decides channels of darknet layer2 to layer5.
+            out_features (Tuple[str]): desired output layer name.
+        """
+        super().__init__()
+        assert out_features, 'please provide output features of Darknet'
+        self.out_features = out_features
+        self.stem = nn.Sequential(
+            BaseConv(
+                in_channels, stem_out_channels, ksize=3, stride=1,
+                act='lrelu'),
+            *self.make_group_layer(stem_out_channels, num_blocks=1, stride=2),
+        )
+        in_channels = stem_out_channels * 2  # 64
+
+        num_blocks = Darknet.depth2blocks[depth]
+        # create darknet with `stem_out_channels` and `num_blocks` layers.
+        # to make model structure more clear, we don't use `for` statement in python.
+        self.dark2 = nn.Sequential(
+            *self.make_group_layer(in_channels, num_blocks[0], stride=2))
+        in_channels *= 2  # 128
+        self.dark3 = nn.Sequential(
+            *self.make_group_layer(in_channels, num_blocks[1], stride=2))
+        in_channels *= 2  # 256
+        self.dark4 = nn.Sequential(
+            *self.make_group_layer(in_channels, num_blocks[2], stride=2))
+        in_channels *= 2  # 512
+
+        self.dark5 = nn.Sequential(
+            *self.make_group_layer(in_channels, num_blocks[3], stride=2),
+            *self.make_spp_block([in_channels, in_channels * 2],
+                                 in_channels * 2),
+        )
+
+    def make_group_layer(self,
+                         in_channels: int,
+                         num_blocks: int,
+                         stride: int = 1):
+        'starts with conv layer then has `num_blocks` `ResLayer`'
+        return [
+            BaseConv(
+                in_channels,
+                in_channels * 2,
+                ksize=3,
+                stride=stride,
+                act='lrelu'),
+            *[(ResLayer(in_channels * 2)) for _ in range(num_blocks)],
+        ]
+
+    def make_spp_block(self, filters_list, in_filters):
+        m = nn.Sequential(*[
+            BaseConv(in_filters, filters_list[0], 1, stride=1, act='lrelu'),
+            BaseConv(
+                filters_list[0], filters_list[1], 3, stride=1, act='lrelu'),
+            SPPBottleneck(
+                in_channels=filters_list[1],
+                out_channels=filters_list[0],
+                activation='lrelu',
+            ),
+            BaseConv(
+                filters_list[0], filters_list[1], 3, stride=1, act='lrelu'),
+            BaseConv(
+                filters_list[1], filters_list[0], 1, stride=1, act='lrelu'),
+        ])
+        return m
+
+    def forward(self, x):
+        outputs = {}
+        x = self.stem(x)
+        outputs['stem'] = x
+        x = self.dark2(x)
+        outputs['dark2'] = x
+        x = self.dark3(x)
+        outputs['dark3'] = x
+        x = self.dark4(x)
+        outputs['dark4'] = x
+        x = self.dark5(x)
+        outputs['dark5'] = x
+        return {k: v for k, v in outputs.items() if k in self.out_features}
+
+
+class CSPDarknet(nn.Module):
+
+    def __init__(
+        self,
+        dep_mul,
+        wid_mul,
+        out_features=('dark3', 'dark4', 'dark5'),
+        depthwise=False,
+        act='silu',
+    ):
+        super().__init__()
+        assert out_features, 'please provide output features of Darknet'
+        self.out_features = out_features
+        Conv = DWConv if depthwise else BaseConv
+
+        base_channels = int(wid_mul * 64)  # 64
+        base_depth = max(round(dep_mul * 3), 1)  # 3
+
+        # stem
+        self.stem = Focus(3, base_channels, ksize=3, act=act)
+
+        # dark2
+        self.dark2 = nn.Sequential(
+            Conv(base_channels, base_channels * 2, 3, 2, act=act),
+            CSPLayer(
+                base_channels * 2,
+                base_channels * 2,
+                n=base_depth,
+                depthwise=depthwise,
+                act=act,
+            ),
+        )
+
+        # dark3
+        self.dark3 = nn.Sequential(
+            Conv(base_channels * 2, base_channels * 4, 3, 2, act=act),
+            CSPLayer(
+                base_channels * 4,
+                base_channels * 4,
+                n=base_depth * 3,
+                depthwise=depthwise,
+                act=act,
+            ),
+        )
+
+        # dark4
+        self.dark4 = nn.Sequential(
+            Conv(base_channels * 4, base_channels * 8, 3, 2, act=act),
+            CSPLayer(
+                base_channels * 8,
+                base_channels * 8,
+                n=base_depth * 3,
+                depthwise=depthwise,
+                act=act,
+            ),
+        )
+
+        # dark5
+        self.dark5 = nn.Sequential(
+            Conv(base_channels * 8, base_channels * 16, 3, 2, act=act),
+            SPPBottleneck(
+                base_channels * 16, base_channels * 16, activation=act),
+            CSPLayer(
+                base_channels * 16,
+                base_channels * 16,
+                n=base_depth,
+                shortcut=False,
+                depthwise=depthwise,
+                act=act,
+            ),
+        )
+
+    def forward(self, x):
+        outputs = {}
+        x = self.stem(x)
+        outputs['stem'] = x
+        x = self.dark2(x)
+        outputs['dark2'] = x
+        x = self.dark3(x)
+        outputs['dark3'] = x
+        x = self.dark4(x)
+        outputs['dark4'] = x
+        x = self.dark5(x)
+        outputs['dark5'] = x
+        return {k: v for k, v in outputs.items() if k in self.out_features}
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/network_blocks.py b/modelscope/models/cv/realtime_object_detection/yolox/models/network_blocks.py
new file mode 100644
index 00000000..fd15c1c1
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/network_blocks.py
@@ -0,0 +1,213 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import torch
+import torch.nn as nn
+
+
+def get_activation(name='silu', inplace=True):
+    if name == 'silu':
+        module = nn.SiLU(inplace=inplace)
+    else:
+        raise AttributeError('Unsupported act type: {}'.format(name))
+    return module
+
+
+class BaseConv(nn.Module):
+    """A Conv2d -> Batchnorm -> silu/leaky relu block"""
+
+    def __init__(self,
+                 in_channels,
+                 out_channels,
+                 ksize,
+                 stride,
+                 groups=1,
+                 bias=False,
+                 act='silu'):
+        super(BaseConv, self).__init__()
+        # same padding
+        pad = (ksize - 1) // 2
+        self.conv = nn.Conv2d(
+            in_channels,
+            out_channels,
+            kernel_size=ksize,
+            stride=stride,
+            padding=pad,
+            groups=groups,
+            bias=bias,
+        )
+        self.bn = nn.BatchNorm2d(out_channels)
+        self.act = get_activation(act, inplace=True)
+
+    def forward(self, x):
+        return self.act(self.bn(self.conv(x)))
+
+    def fuseforward(self, x):
+        return self.act(self.conv(x))
+
+
+class DWConv(nn.Module):
+    """Depthwise Conv + Conv"""
+
+    def __init__(self, in_channels, out_channels, ksize, stride=1, act='silu'):
+        super(DWConv, self).__init__()
+        self.dconv = BaseConv(
+            in_channels,
+            in_channels,
+            ksize=ksize,
+            stride=stride,
+            groups=in_channels,
+            act=act,
+        )
+        self.pconv = BaseConv(
+            in_channels, out_channels, ksize=1, stride=1, groups=1, act=act)
+
+    def forward(self, x):
+        x = self.dconv(x)
+        return self.pconv(x)
+
+
+class Bottleneck(nn.Module):
+    # Standard bottleneck
+    def __init__(
+        self,
+        in_channels,
+        out_channels,
+        shortcut=True,
+        expansion=0.5,
+        depthwise=False,
+        act='silu',
+    ):
+        super().__init__()
+        hidden_channels = int(out_channels * expansion)
+        Conv = DWConv if depthwise else BaseConv
+        self.conv1 = BaseConv(
+            in_channels, hidden_channels, 1, stride=1, act=act)
+        self.conv2 = Conv(hidden_channels, out_channels, 3, stride=1, act=act)
+        self.use_add = shortcut and in_channels == out_channels
+
+    def forward(self, x):
+        y = self.conv2(self.conv1(x))
+        if self.use_add:
+            y = y + x
+        return y
+
+
+class ResLayer(nn.Module):
+    'Residual layer with `in_channels` inputs.'
+
+    def __init__(self, in_channels: int):
+        super().__init__()
+        mid_channels = in_channels // 2
+        self.layer1 = BaseConv(
+            in_channels, mid_channels, ksize=1, stride=1, act='lrelu')
+        self.layer2 = BaseConv(
+            mid_channels, in_channels, ksize=3, stride=1, act='lrelu')
+
+    def forward(self, x):
+        out = self.layer2(self.layer1(x))
+        return x + out
+
+
+class SPPBottleneck(nn.Module):
+    """Spatial pyramid pooling layer used in YOLOv3-SPP"""
+
+    def __init__(self,
+                 in_channels,
+                 out_channels,
+                 kernel_sizes=(5, 9, 13),
+                 activation='silu'):
+        super().__init__()
+        hidden_channels = in_channels // 2
+        self.conv1 = BaseConv(
+            in_channels, hidden_channels, 1, stride=1, act=activation)
+        self.m = nn.ModuleList([
+            nn.MaxPool2d(kernel_size=ks, stride=1, padding=ks // 2)
+            for ks in kernel_sizes
+        ])
+        conv2_channels = hidden_channels * (len(kernel_sizes) + 1)
+        self.conv2 = BaseConv(
+            conv2_channels, out_channels, 1, stride=1, act=activation)
+
+    def forward(self, x):
+        x = self.conv1(x)
+        x = torch.cat([x] + [m(x) for m in self.m], dim=1)
+        x = self.conv2(x)
+        return x
+
+
+class CSPLayer(nn.Module):
+    """C3 in yolov5, CSP Bottleneck with 3 convolutions"""
+
+    def __init__(
+        self,
+        in_channels,
+        out_channels,
+        n=1,
+        shortcut=True,
+        expansion=0.5,
+        depthwise=False,
+        act='silu',
+    ):
+        """
+        Args:
+            in_channels (int): input channels.
+            out_channels (int): output channels.
+            n (int): number of Bottlenecks. Default value: 1.
+        """
+        # ch_in, ch_out, number, shortcut, groups, expansion
+        super().__init__()
+        hidden_channels = int(out_channels * expansion)  # hidden channels
+        self.conv1 = BaseConv(
+            in_channels, hidden_channels, 1, stride=1, act=act)
+        self.conv2 = BaseConv(
+            in_channels, hidden_channels, 1, stride=1, act=act)
+        self.conv3 = BaseConv(
+            2 * hidden_channels, out_channels, 1, stride=1, act=act)
+        module_list = [
+            Bottleneck(
+                hidden_channels,
+                hidden_channels,
+                shortcut,
+                1.0,
+                depthwise,
+                act=act) for _ in range(n)
+        ]
+        self.m = nn.Sequential(*module_list)
+
+    def forward(self, x):
+        x_1 = self.conv1(x)
+        x_2 = self.conv2(x)
+        x_1 = self.m(x_1)
+        x = torch.cat((x_1, x_2), dim=1)
+        return self.conv3(x)
+
+
+class Focus(nn.Module):
+    """Focus width and height information into channel space."""
+
+    def __init__(self,
+                 in_channels,
+                 out_channels,
+                 ksize=1,
+                 stride=1,
+                 act='silu'):
+        super().__init__()
+        self.conv = BaseConv(
+            in_channels * 4, out_channels, ksize, stride, act=act)
+
+    def forward(self, x):
+        # shape of x (b,c,w,h) -> y(b,4c,w/2,h/2)
+        patch_top_left = x[..., ::2, ::2]
+        patch_top_right = x[..., ::2, 1::2]
+        patch_bot_left = x[..., 1::2, ::2]
+        patch_bot_right = x[..., 1::2, 1::2]
+        x = torch.cat(
+            (
+                patch_top_left,
+                patch_bot_left,
+                patch_top_right,
+                patch_bot_right,
+            ),
+            dim=1,
+        )
+        return self.conv(x)
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_fpn.py b/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_fpn.py
new file mode 100644
index 00000000..0cbebb09
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_fpn.py
@@ -0,0 +1,80 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import torch
+import torch.nn as nn
+
+from .darknet import Darknet
+from .network_blocks import BaseConv
+
+
+class YOLOFPN(nn.Module):
+    """
+    YOLOFPN module. Darknet 53 is the default backbone of this model.
+    """
+
+    def __init__(
+        self,
+        depth=53,
+        in_features=['dark3', 'dark4', 'dark5'],
+    ):
+        super(YOLOFPN, self).__init__()
+
+        self.backbone = Darknet(depth)
+        self.in_features = in_features
+
+        # out 1
+        self.out1_cbl = self._make_cbl(512, 256, 1)
+        self.out1 = self._make_embedding([256, 512], 512 + 256)
+
+        # out 2
+        self.out2_cbl = self._make_cbl(256, 128, 1)
+        self.out2 = self._make_embedding([128, 256], 256 + 128)
+
+        # upsample
+        self.upsample = nn.Upsample(scale_factor=2, mode='nearest')
+
+    def _make_cbl(self, _in, _out, ks):
+        return BaseConv(_in, _out, ks, stride=1, act='lrelu')
+
+    def _make_embedding(self, filters_list, in_filters):
+        m = nn.Sequential(*[
+            self._make_cbl(in_filters, filters_list[0], 1),
+            self._make_cbl(filters_list[0], filters_list[1], 3),
+            self._make_cbl(filters_list[1], filters_list[0], 1),
+            self._make_cbl(filters_list[0], filters_list[1], 3),
+            self._make_cbl(filters_list[1], filters_list[0], 1),
+        ])
+        return m
+
+    def load_pretrained_model(self, filename='./weights/darknet53.mix.pth'):
+        with open(filename, 'rb') as f:
+            state_dict = torch.load(f, map_location='cpu')
+        print('loading pretrained weights...')
+        self.backbone.load_state_dict(state_dict)
+
+    def forward(self, inputs):
+        """
+        Args:
+            inputs (Tensor): input image.
+
+        Returns:
+            Tuple[Tensor]: FPN output features..
+        """
+        #  backbone
+        out_features = self.backbone(inputs)
+        x2, x1, x0 = [out_features[f] for f in self.in_features]
+
+        #  yolo branch 1
+        x1_in = self.out1_cbl(x0)
+        x1_in = self.upsample(x1_in)
+        x1_in = torch.cat([x1_in, x1], 1)
+        out_dark4 = self.out1(x1_in)
+
+        #  yolo branch 2
+        x2_in = self.out2_cbl(out_dark4)
+        x2_in = self.upsample(x2_in)
+        x2_in = torch.cat([x2_in, x2], 1)
+        out_dark3 = self.out2(x2_in)
+
+        outputs = (out_dark3, out_dark4, x0)
+        return outputs
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_head.py b/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_head.py
new file mode 100644
index 00000000..1eef93a4
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_head.py
@@ -0,0 +1,182 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import math
+
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+from ..utils import bboxes_iou, meshgrid
+from .network_blocks import BaseConv, DWConv
+
+
+class YOLOXHead(nn.Module):
+
+    def __init__(
+        self,
+        num_classes,
+        width=1.0,
+        strides=[8, 16, 32],
+        in_channels=[256, 512, 1024],
+        act='silu',
+        depthwise=False,
+    ):
+        """
+        Args:
+            act (str): activation type of conv. Defalut value: "silu".
+            depthwise (bool): whether apply depthwise conv in conv branch. Defalut value: False.
+        """
+        super(YOLOXHead, self).__init__()
+
+        self.n_anchors = 1
+        self.num_classes = num_classes
+        self.decode_in_inference = True  # for deploy, set to False
+
+        self.cls_convs = nn.ModuleList()
+        self.reg_convs = nn.ModuleList()
+        self.cls_preds = nn.ModuleList()
+        self.reg_preds = nn.ModuleList()
+        self.obj_preds = nn.ModuleList()
+        self.stems = nn.ModuleList()
+        Conv = DWConv if depthwise else BaseConv
+
+        for i in range(len(in_channels)):
+            self.stems.append(
+                BaseConv(
+                    in_channels=int(in_channels[i] * width),
+                    out_channels=int(256 * width),
+                    ksize=1,
+                    stride=1,
+                    act=act,
+                ))
+            self.cls_convs.append(
+                nn.Sequential(*[
+                    Conv(
+                        in_channels=int(256 * width),
+                        out_channels=int(256 * width),
+                        ksize=3,
+                        stride=1,
+                        act=act,
+                    ),
+                    Conv(
+                        in_channels=int(256 * width),
+                        out_channels=int(256 * width),
+                        ksize=3,
+                        stride=1,
+                        act=act,
+                    ),
+                ]))
+            self.reg_convs.append(
+                nn.Sequential(*[
+                    Conv(
+                        in_channels=int(256 * width),
+                        out_channels=int(256 * width),
+                        ksize=3,
+                        stride=1,
+                        act=act,
+                    ),
+                    Conv(
+                        in_channels=int(256 * width),
+                        out_channels=int(256 * width),
+                        ksize=3,
+                        stride=1,
+                        act=act,
+                    ),
+                ]))
+            self.cls_preds.append(
+                nn.Conv2d(
+                    in_channels=int(256 * width),
+                    out_channels=self.n_anchors * self.num_classes,
+                    kernel_size=1,
+                    stride=1,
+                    padding=0,
+                ))
+            self.reg_preds.append(
+                nn.Conv2d(
+                    in_channels=int(256 * width),
+                    out_channels=4,
+                    kernel_size=1,
+                    stride=1,
+                    padding=0,
+                ))
+            self.obj_preds.append(
+                nn.Conv2d(
+                    in_channels=int(256 * width),
+                    out_channels=self.n_anchors * 1,
+                    kernel_size=1,
+                    stride=1,
+                    padding=0,
+                ))
+
+        self.use_l1 = False
+        self.l1_loss = nn.L1Loss(reduction='none')
+        self.bcewithlog_loss = nn.BCEWithLogitsLoss(reduction='none')
+        # self.iou_loss = IOUloss(reduction="none")
+        self.strides = strides
+        self.grids = [torch.zeros(1)] * len(in_channels)
+
+    def initialize_biases(self, prior_prob):
+        for conv in self.cls_preds:
+            b = conv.bias.view(self.n_anchors, -1)
+            b.data.fill_(-math.log((1 - prior_prob) / prior_prob))
+            conv.bias = torch.nn.Parameter(b.view(-1), requires_grad=True)
+
+        for conv in self.obj_preds:
+            b = conv.bias.view(self.n_anchors, -1)
+            b.data.fill_(-math.log((1 - prior_prob) / prior_prob))
+            conv.bias = torch.nn.Parameter(b.view(-1), requires_grad=True)
+
+    def forward(self, xin, labels=None, imgs=None):
+        outputs = []
+
+        for k, (cls_conv, reg_conv, stride_this_level, x) in enumerate(
+                zip(self.cls_convs, self.reg_convs, self.strides, xin)):
+            x = self.stems[k](x)
+            cls_x = x
+            reg_x = x
+
+            cls_feat = cls_conv(cls_x)
+            cls_output = self.cls_preds[k](cls_feat)
+
+            reg_feat = reg_conv(reg_x)
+            reg_output = self.reg_preds[k](reg_feat)
+            obj_output = self.obj_preds[k](reg_feat)
+
+            if self.training:
+                pass
+            else:
+                output = torch.cat(
+                    [reg_output,
+                     obj_output.sigmoid(),
+                     cls_output.sigmoid()], 1)
+
+            outputs.append(output)
+
+        if self.training:
+            pass
+        else:
+            self.hw = [x.shape[-2:] for x in outputs]
+            # [batch, n_anchors_all, 85]
+            outputs = torch.cat([x.flatten(start_dim=2) for x in outputs],
+                                dim=2).permute(0, 2, 1)
+            if self.decode_in_inference:
+                return self.decode_outputs(outputs, dtype=xin[0].type())
+            else:
+                return outputs
+
+    def decode_outputs(self, outputs, dtype):
+        grids = []
+        strides = []
+        for (hsize, wsize), stride in zip(self.hw, self.strides):
+            yv, xv = meshgrid([torch.arange(hsize), torch.arange(wsize)])
+            grid = torch.stack((xv, yv), 2).view(1, -1, 2)
+            grids.append(grid)
+            shape = grid.shape[:2]
+            strides.append(torch.full((*shape, 1), stride))
+
+        grids = torch.cat(grids, dim=1).type(dtype)
+        strides = torch.cat(strides, dim=1).type(dtype)
+
+        outputs[..., :2] = (outputs[..., :2] + grids) * strides
+        outputs[..., 2:4] = torch.exp(outputs[..., 2:4]) * strides
+        return outputs
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_pafpn.py b/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_pafpn.py
new file mode 100644
index 00000000..cd4258bf
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/yolo_pafpn.py
@@ -0,0 +1,126 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import torch
+import torch.nn as nn
+
+from .darknet import CSPDarknet
+from .network_blocks import BaseConv, CSPLayer, DWConv
+
+
+class YOLOPAFPN(nn.Module):
+    """
+    YOLOv3 model. Darknet 53 is the default backbone of this model.
+    """
+
+    def __init__(
+        self,
+        depth=1.0,
+        width=1.0,
+        in_features=('dark3', 'dark4', 'dark5'),
+        in_channels=[256, 512, 1024],
+        depthwise=False,
+        act='silu',
+    ):
+        super(YOLOPAFPN, self).__init__()
+        self.backbone = CSPDarknet(depth, width, depthwise=depthwise, act=act)
+        self.in_features = in_features
+        self.in_channels = in_channels
+        Conv = DWConv if depthwise else BaseConv
+
+        self.upsample = nn.Upsample(scale_factor=2, mode='nearest')
+        self.lateral_conv0 = BaseConv(
+            int(in_channels[2] * width),
+            int(in_channels[1] * width),
+            1,
+            1,
+            act=act)
+        self.C3_p4 = CSPLayer(
+            int(2 * in_channels[1] * width),
+            int(in_channels[1] * width),
+            round(3 * depth),
+            False,
+            depthwise=depthwise,
+            act=act,
+        )  # cat
+
+        self.reduce_conv1 = BaseConv(
+            int(in_channels[1] * width),
+            int(in_channels[0] * width),
+            1,
+            1,
+            act=act)
+        self.C3_p3 = CSPLayer(
+            int(2 * in_channels[0] * width),
+            int(in_channels[0] * width),
+            round(3 * depth),
+            False,
+            depthwise=depthwise,
+            act=act,
+        )
+
+        # bottom-up conv
+        self.bu_conv2 = Conv(
+            int(in_channels[0] * width),
+            int(in_channels[0] * width),
+            3,
+            2,
+            act=act)
+        self.C3_n3 = CSPLayer(
+            int(2 * in_channels[0] * width),
+            int(in_channels[1] * width),
+            round(3 * depth),
+            False,
+            depthwise=depthwise,
+            act=act,
+        )
+
+        # bottom-up conv
+        self.bu_conv1 = Conv(
+            int(in_channels[1] * width),
+            int(in_channels[1] * width),
+            3,
+            2,
+            act=act)
+        self.C3_n4 = CSPLayer(
+            int(2 * in_channels[1] * width),
+            int(in_channels[2] * width),
+            round(3 * depth),
+            False,
+            depthwise=depthwise,
+            act=act,
+        )
+
+    def forward(self, input):
+        """
+        Args:
+            inputs: input images.
+
+        Returns:
+            Tuple[Tensor]: FPN feature.
+        """
+
+        #  backbone
+        out_features = self.backbone(input)
+        features = [out_features[f] for f in self.in_features]
+        [x2, x1, x0] = features
+
+        fpn_out0 = self.lateral_conv0(x0)  # 1024->512/32
+        f_out0 = self.upsample(fpn_out0)  # 512/16
+        f_out0 = torch.cat([f_out0, x1], 1)  # 512->1024/16
+        f_out0 = self.C3_p4(f_out0)  # 1024->512/16
+
+        fpn_out1 = self.reduce_conv1(f_out0)  # 512->256/16
+        f_out1 = self.upsample(fpn_out1)  # 256/8
+        f_out1 = torch.cat([f_out1, x2], 1)  # 256->512/8
+        pan_out2 = self.C3_p3(f_out1)  # 512->256/8
+
+        p_out1 = self.bu_conv2(pan_out2)  # 256->256/16
+        p_out1 = torch.cat([p_out1, fpn_out1], 1)  # 256->512/16
+        pan_out1 = self.C3_n3(p_out1)  # 512->512/16
+
+        p_out0 = self.bu_conv1(pan_out1)  # 512->512/32
+        p_out0 = torch.cat([p_out0, fpn_out0], 1)  # 512->1024/32
+        pan_out0 = self.C3_n4(p_out0)  # 1024->1024/32
+
+        outputs = (pan_out2, pan_out1, pan_out0)
+        return outputs
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/models/yolox.py b/modelscope/models/cv/realtime_object_detection/yolox/models/yolox.py
new file mode 100644
index 00000000..181c368b
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/models/yolox.py
@@ -0,0 +1,33 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import torch.nn as nn
+
+from .yolo_head import YOLOXHead
+from .yolo_pafpn import YOLOPAFPN
+
+
+class YOLOX(nn.Module):
+    """
+    YOLOX model module. The module list is defined by create_yolov3_modules function.
+    The network returns loss values from three YOLO layers during training
+    and detection results during test.
+    """
+
+    def __init__(self, backbone=None, head=None):
+        super(YOLOX, self).__init__()
+        if backbone is None:
+            backbone = YOLOPAFPN()
+        if head is None:
+            head = YOLOXHead(80)
+
+        self.backbone = backbone
+        self.head = head
+
+    def forward(self, x, targets=None):
+        fpn_outs = self.backbone(x)
+        if self.training:
+            raise NotImplementedError('Training is not supported yet!')
+        else:
+            outputs = self.head(fpn_outs)
+
+        return outputs
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/utils/__init__.py b/modelscope/models/cv/realtime_object_detection/yolox/utils/__init__.py
new file mode 100644
index 00000000..2c1ea489
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/utils/__init__.py
@@ -0,0 +1,5 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+from .boxes import *  # noqa
+
+__all__ = ['bboxes_iou', 'meshgrid', 'postprocess', 'xyxy2cxcywh', 'xyxy2xywh']
diff --git a/modelscope/models/cv/realtime_object_detection/yolox/utils/boxes.py b/modelscope/models/cv/realtime_object_detection/yolox/utils/boxes.py
new file mode 100644
index 00000000..b29a3a04
--- /dev/null
+++ b/modelscope/models/cv/realtime_object_detection/yolox/utils/boxes.py
@@ -0,0 +1,107 @@
+# The implementation is based on YOLOX, available at https://github.com/Megvii-BaseDetection/YOLOX
+
+import torch
+import torchvision
+
+_TORCH_VER = [int(x) for x in torch.__version__.split('.')[:2]]
+
+
+def meshgrid(*tensors):
+    if _TORCH_VER >= [1, 10]:
+        return torch.meshgrid(*tensors, indexing='ij')
+    else:
+        return torch.meshgrid(*tensors)
+
+
+def xyxy2xywh(bboxes):
+    bboxes[:, 2] = bboxes[:, 2] - bboxes[:, 0]
+    bboxes[:, 3] = bboxes[:, 3] - bboxes[:, 1]
+    return bboxes
+
+
+def xyxy2cxcywh(bboxes):
+    bboxes[:, 2] = bboxes[:, 2] - bboxes[:, 0]
+    bboxes[:, 3] = bboxes[:, 3] - bboxes[:, 1]
+    bboxes[:, 0] = bboxes[:, 0] + bboxes[:, 2] * 0.5
+    bboxes[:, 1] = bboxes[:, 1] + bboxes[:, 3] * 0.5
+    return bboxes
+
+
+def postprocess(prediction,
+                num_classes,
+                conf_thre=0.7,
+                nms_thre=0.45,
+                class_agnostic=False):
+    box_corner = prediction.new(prediction.shape)
+    box_corner[:, :, 0] = prediction[:, :, 0] - prediction[:, :, 2] / 2
+    box_corner[:, :, 1] = prediction[:, :, 1] - prediction[:, :, 3] / 2
+    box_corner[:, :, 2] = prediction[:, :, 0] + prediction[:, :, 2] / 2
+    box_corner[:, :, 3] = prediction[:, :, 1] + prediction[:, :, 3] / 2
+    prediction[:, :, :4] = box_corner[:, :, :4]
+
+    output = [None for _ in range(len(prediction))]
+    for i, image_pred in enumerate(prediction):
+
+        # If none are remaining => process next image
+        if not image_pred.size(0):
+            continue
+        # Get score and class with highest confidence
+        class_conf, class_pred = torch.max(
+            image_pred[:, 5:5 + num_classes], 1, keepdim=True)
+
+        conf_mask = image_pred[:, 4] * class_conf.squeeze()
+        conf_mask = (conf_mask >= conf_thre).squeeze()
+        # Detections ordered as (x1, y1, x2, y2, obj_conf, class_conf, class_pred)
+        detections = torch.cat(
+            (image_pred[:, :5], class_conf, class_pred.float()), 1)
+        detections = detections[conf_mask]
+        if not detections.size(0):
+            continue
+
+        if class_agnostic:
+            nms_out_index = torchvision.ops.nms(
+                detections[:, :4],
+                detections[:, 4] * detections[:, 5],
+                nms_thre,
+            )
+        else:
+            nms_out_index = torchvision.ops.batched_nms(
+                detections[:, :4],
+                detections[:, 4] * detections[:, 5],
+                detections[:, 6],
+                nms_thre,
+            )
+
+        detections = detections[nms_out_index]
+        if output[i] is None:
+            output[i] = detections
+        else:
+            output[i] = torch.cat((output[i], detections))
+
+    return output
+
+
+def bboxes_iou(bboxes_a, bboxes_b, xyxy=True):
+    if bboxes_a.shape[1] != 4 or bboxes_b.shape[1] != 4:
+        raise IndexError
+
+    if xyxy:
+        tl = torch.max(bboxes_a[:, None, :2], bboxes_b[:, :2])
+        br = torch.min(bboxes_a[:, None, 2:], bboxes_b[:, 2:])
+        area_a = torch.prod(bboxes_a[:, 2:] - bboxes_a[:, :2], 1)
+        area_b = torch.prod(bboxes_b[:, 2:] - bboxes_b[:, :2], 1)
+    else:
+        tl = torch.max(
+            (bboxes_a[:, None, :2] - bboxes_a[:, None, 2:] / 2),
+            (bboxes_b[:, :2] - bboxes_b[:, 2:] / 2),
+        )
+        br = torch.min(
+            (bboxes_a[:, None, :2] + bboxes_a[:, None, 2:] / 2),
+            (bboxes_b[:, :2] + bboxes_b[:, 2:] / 2),
+        )
+
+        area_a = torch.prod(bboxes_a[:, 2:], 1)
+        area_b = torch.prod(bboxes_b[:, 2:], 1)
+    en = (tl < br).type(tl.type()).prod(dim=2)
+    area_i = torch.prod(br - tl, 2) * en  # * ((tl < br).all())
+    return area_i / (area_a[:, None] + area_b - area_i)
diff --git a/modelscope/pipelines/cv/__init__.py b/modelscope/pipelines/cv/__init__.py
index b1a513e5..2c062226 100644
--- a/modelscope/pipelines/cv/__init__.py
+++ b/modelscope/pipelines/cv/__init__.py
@@ -32,6 +32,7 @@ if TYPE_CHECKING:
     from .image_to_image_generate_pipeline import Image2ImageGenerationPipeline
     from .image_to_image_translation_pipeline import Image2ImageTranslationPipeline
     from .product_retrieval_embedding_pipeline import ProductRetrievalEmbeddingPipeline
+    from .realtime_object_detection_pipeline import RealtimeObjectDetectionPipeline
     from .live_category_pipeline import LiveCategoryPipeline
     from .ocr_detection_pipeline import OCRDetectionPipeline
     from .ocr_recognition_pipeline import OCRRecognitionPipeline
@@ -75,6 +76,8 @@ else:
         ['Image2ImageTranslationPipeline'],
         'product_retrieval_embedding_pipeline':
         ['ProductRetrievalEmbeddingPipeline'],
+        'realtime_object_detection_pipeline':
+        ['RealtimeObjectDetectionPipeline'],
         'live_category_pipeline': ['LiveCategoryPipeline'],
         'image_to_image_generation_pipeline':
         ['Image2ImageGenerationPipeline'],
diff --git a/modelscope/pipelines/cv/realtime_object_detection_pipeline.py b/modelscope/pipelines/cv/realtime_object_detection_pipeline.py
new file mode 100644
index 00000000..629720d1
--- /dev/null
+++ b/modelscope/pipelines/cv/realtime_object_detection_pipeline.py
@@ -0,0 +1,50 @@
+import os.path as osp
+from typing import Any, Dict, List, Union
+
+import cv2
+import json
+import numpy as np
+import torch
+from PIL import Image
+from torchvision import transforms
+
+from modelscope.metainfo import Pipelines
+from modelscope.models.cv.realtime_object_detection import RealtimeDetector
+from modelscope.outputs import OutputKeys
+from modelscope.pipelines import pipeline
+from modelscope.pipelines.base import Input, Model, Pipeline, Tensor
+from modelscope.pipelines.builder import PIPELINES
+from modelscope.preprocessors import load_image
+from modelscope.utils.constant import ModelFile, Tasks
+from modelscope.utils.logger import get_logger
+
+logger = get_logger()
+
+
+@PIPELINES.register_module(
+    Tasks.image_object_detection,
+    module_name=Pipelines.realtime_object_detection)
+class RealtimeObjectDetectionPipeline(Pipeline):
+
+    def __init__(self, model: str, **kwargs):
+        super().__init__(model=model, **kwargs)
+        self.model = RealtimeDetector(model)
+
+    def preprocess(self, input: Input) -> Dict[Tensor, Union[str, np.ndarray]]:
+        output = self.model.preprocess(input)
+        return {'pre_output': output}
+
+    def forward(self, input: Tensor) -> Dict[Tensor, Dict[str, np.ndarray]]:
+        pre_output = input['pre_output']
+        forward_output = self.model(pre_output)
+        return {'forward_output': forward_output}
+
+    def postprocess(self, input: Dict[Tensor, Dict[str, np.ndarray]],
+                    **kwargs) -> str:
+        forward_output = input['forward_output']
+        bboxes, scores, labels = forward_output
+        return {
+            OutputKeys.BOXES: bboxes,
+            OutputKeys.SCORES: scores,
+            OutputKeys.LABELS: labels,
+        }
diff --git a/modelscope/utils/cv/image_utils.py b/modelscope/utils/cv/image_utils.py
index 0ad0ef8f..ea1d95b5 100644
--- a/modelscope/utils/cv/image_utils.py
+++ b/modelscope/utils/cv/image_utils.py
@@ -70,6 +70,13 @@ def draw_box(image, box):
                   (int(box[1][0]), int(box[1][1])), (0, 0, 255), 2)
 
 
+def realtime_object_detection_bbox_vis(image, bboxes):
+    for bbox in bboxes:
+        cv2.rectangle(image, (bbox[0], bbox[1]), (bbox[2], bbox[3]),
+                      (255, 0, 0), 2)
+    return image
+
+
 def draw_keypoints(output, original_image):
     poses = np.array(output[OutputKeys.POSES])
     scores = np.array(output[OutputKeys.SCORES])
diff --git a/tests/pipelines/test_realtime_object_detection.py b/tests/pipelines/test_realtime_object_detection.py
new file mode 100644
index 00000000..03ddacf4
--- /dev/null
+++ b/tests/pipelines/test_realtime_object_detection.py
@@ -0,0 +1,52 @@
+# Copyright (c) Alibaba, Inc. and its affiliates.
+import unittest
+
+import cv2
+import numpy as np
+
+from modelscope.outputs import OutputKeys
+from modelscope.pipelines import pipeline
+from modelscope.pipelines.base import Pipeline
+from modelscope.utils.constant import Tasks
+from modelscope.utils.cv.image_utils import realtime_object_detection_bbox_vis
+from modelscope.utils.test_utils import test_level
+
+
+class RealtimeObjectDetectionTest(unittest.TestCase):
+
+    def setUp(self) -> None:
+        self.model_id = 'damo/cv_cspnet_image-object-detection_yolox'
+        self.model_nano_id = 'damo/cv_cspnet_image-object-detection_yolox_nano_coco'
+        self.test_image = 'data/test/images/keypoints_detect/000000438862.jpg'
+
+    @unittest.skipUnless(test_level() >= 0, 'skip test in current test level')
+    def test_run_modelhub(self):
+        realtime_object_detection = pipeline(
+            Tasks.image_object_detection, model=self.model_id)
+
+        image = cv2.imread(self.test_image)
+        result = realtime_object_detection(image)
+        if result:
+            bboxes = result[OutputKeys.BOXES].astype(int)
+            image = realtime_object_detection_bbox_vis(image, bboxes)
+            cv2.imwrite('rt_obj_out.jpg', image)
+        else:
+            raise ValueError('process error')
+
+    @unittest.skipUnless(test_level() >= 0, 'skip test in current test level')
+    def test_run_nano(self):
+        realtime_object_detection = pipeline(
+            Tasks.image_object_detection, model=self.model_nano_id)
+
+        image = cv2.imread(self.test_image)
+        result = realtime_object_detection(image)
+        if result:
+            bboxes = result[OutputKeys.BOXES].astype(int)
+            image = realtime_object_detection_bbox_vis(image, bboxes)
+            cv2.imwrite('rtnano_obj_out.jpg', image)
+        else:
+            raise ValueError('process error')
+
+
+if __name__ == '__main__':
+    unittest.main()