diff --git a/modelscope/outputs.py b/modelscope/outputs.py
index d7d619bf..b3eb9ad8 100644
--- a/modelscope/outputs.py
+++ b/modelscope/outputs.py
@@ -202,9 +202,9 @@ TASK_OUTPUTS = {
     #               [[score]*15]
     #              ]
     #   "boxes": [
-    #               [[x1, y1], [x2, y2]],
-    #               [[x1, y1], [x2, y2]],
-    #               [[x1, y1], [x2, y2]],
+    #               [x1, y1, x2, y2],
+    #               [x1, y1, x2, y2],
+    #               [x1, y1, x2, y2],
     #             ]
     # }
     Tasks.body_2d_keypoints:
diff --git a/modelscope/pipelines/cv/body_2d_keypoints_pipeline.py b/modelscope/pipelines/cv/body_2d_keypoints_pipeline.py
index f9ae4b2c..c6a05195 100644
--- a/modelscope/pipelines/cv/body_2d_keypoints_pipeline.py
+++ b/modelscope/pipelines/cv/body_2d_keypoints_pipeline.py
@@ -76,8 +76,11 @@ class Body2DKeypointsPipeline(Pipeline):
             }
 
         poses, scores, boxes = self.keypoint_model.postprocess(input)
+        result_boxes = []
+        for box in boxes:
+            result_boxes.append([box[0][0], box[0][1], box[1][0], box[1][1]])
         return {
-            OutputKeys.BOXES: boxes,
+            OutputKeys.BOXES: result_boxes,
             OutputKeys.POSES: poses,
             OutputKeys.SCORES: scores
         }
diff --git a/modelscope/utils/cv/image_utils.py b/modelscope/utils/cv/image_utils.py
index 6175a53f..9ec2c4f3 100644
--- a/modelscope/utils/cv/image_utils.py
+++ b/modelscope/utils/cv/image_utils.py
@@ -66,8 +66,8 @@ def draw_joints(image, np_kps, score, threshold=0.2):
 
 
 def draw_box(image, box):
-    cv2.rectangle(image, (int(box[0][0]), int(box[0][1])),
-                  (int(box[1][0]), int(box[1][1])), (0, 0, 255), 2)
+    cv2.rectangle(image, (int(box[0]), int(box[1])),
+                  (int(box[2]), int(box[3])), (0, 0, 255), 2)
 
 
 def realtime_object_detection_bbox_vis(image, bboxes):