diff --git a/docs/source/conf.py b/docs/source/conf.py
index 50ac2fa0..d41c3cd6 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -43,7 +43,7 @@ extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.napoleon',
     'sphinx.ext.viewcode',
-    'recommonmark',
+    'myst_parser',
     'sphinx_markdown_tables',
     'sphinx_copybutton',
 ]
diff --git a/modelscope/hub/api.py b/modelscope/hub/api.py
index d847bf65..cae66b30 100644
--- a/modelscope/hub/api.py
+++ b/modelscope/hub/api.py
@@ -11,8 +11,8 @@ import requests
 
 from modelscope.utils.logger import get_logger
 from ..msdatasets.config import DOWNLOADED_DATASETS_PATH, HUB_DATASET_ENDPOINT
-from ..utils.constant import DownloadMode
-from .constants import MODELSCOPE_URL_SCHEME
+from ..utils.constant import (DEFAULT_DATASET_REVISION, DEFAULT_MODEL_REVISION,
+                              DownloadMode)
 from .errors import (InvalidParameter, NotExistError, datahub_raise_on_error,
                      handle_http_response, is_ok, raise_on_error)
 from .utils.utils import get_endpoint, model_id_to_group_owner_name
@@ -35,7 +35,7 @@ class HubApi:
         Login with username and password
 
         Args:
-            username(`str`): user name on modelscope
+            user_name(`str`): user name on modelscope
             password(`str`): password
 
         Returns:
@@ -135,7 +135,7 @@ class HubApi:
     def get_model(
         self,
         model_id: str,
-        revision: str = 'master',
+        revision: str = DEFAULT_MODEL_REVISION,
     ) -> str:
         """
         Get model information at modelscope_hub
@@ -144,7 +144,7 @@ class HubApi:
             model_id(`str`): The model id.
             revision(`str`): revision of model
         Returns:
-            The model details information.
+            The model detail information.
         Raises:
             NotExistError: If the model is not exist, will throw NotExistError
         <Tip>
@@ -207,7 +207,7 @@ class HubApi:
 
     def get_model_files(self,
                         model_id: str,
-                        revision: Optional[str] = 'master',
+                        revision: Optional[str] = DEFAULT_MODEL_REVISION,
                         root: Optional[str] = None,
                         recursive: Optional[str] = False,
                         use_cookies: Union[bool, CookieJar] = False,
@@ -216,12 +216,12 @@ class HubApi:
 
         Args:
             model_id (str): The model id
-            revision (Optional[str], optional): The branch or tag name. Defaults to 'master'.
+            revision (Optional[str], optional): The branch or tag name.
             root (Optional[str], optional): The root path. Defaults to None.
-            recursive (Optional[str], optional): Is recurive list files. Defaults to False.
-            use_cookies (Union[bool, CookieJar], optional): If is cookieJar, we will use this cookie, if True, will
+            recursive (Optional[str], optional): Is recursive list files. Defaults to False.
+            use_cookies (Union[bool, CookieJar], optional): If is cookieJar, we will use this cookie, if True,
                         will load cookie from local. Defaults to False.
-            is_snapshot(Optional[bool], optional): when snapshot_download set to True, otherwise False.
+            headers: request headers
 
         Raises:
             ValueError: If user_cookies is True, but no local cookie.
@@ -258,18 +258,19 @@ class HubApi:
         dataset_list = r.json()['Data']
         return [x['Name'] for x in dataset_list]
 
-    def fetch_dataset_scripts(self,
-                              dataset_name: str,
-                              namespace: str,
-                              download_mode: Optional[DownloadMode],
-                              version: Optional[str] = 'master'):
+    def fetch_dataset_scripts(
+            self,
+            dataset_name: str,
+            namespace: str,
+            download_mode: Optional[DownloadMode],
+            revision: Optional[str] = DEFAULT_DATASET_REVISION):
         if namespace is None:
             raise ValueError(
                 f'Dataset from Hubs.modelscope should have a valid "namespace", but get {namespace}'
             )
-        version = version or 'master'
+        revision = revision or DEFAULT_DATASET_REVISION
         cache_dir = os.path.join(DOWNLOADED_DATASETS_PATH, dataset_name,
-                                 namespace, version)
+                                 namespace, revision)
         download_mode = DownloadMode(download_mode
                                      or DownloadMode.REUSE_DATASET_IF_EXISTS)
         if download_mode == DownloadMode.FORCE_REDOWNLOAD and os.path.exists(
@@ -281,7 +282,7 @@ class HubApi:
         resp = r.json()
         datahub_raise_on_error(datahub_url, resp)
         dataset_id = resp['Data']['Id']
-        datahub_url = f'{self.dataset_endpoint}/api/v1/datasets/{dataset_id}/repo/tree?Revision={version}'
+        datahub_url = f'{self.dataset_endpoint}/api/v1/datasets/{dataset_id}/repo/tree?Revision={revision}'
         r = requests.get(datahub_url)
         resp = r.json()
         datahub_raise_on_error(datahub_url, resp)
@@ -289,7 +290,7 @@ class HubApi:
         if file_list is None:
             raise NotExistError(
                 f'The modelscope dataset [dataset_name = {dataset_name}, namespace = {namespace}, '
-                f'version = {version}] dose not exist')
+                f'version = {revision}] dose not exist')
 
         file_list = file_list['Files']
         local_paths = defaultdict(list)
@@ -297,7 +298,7 @@ class HubApi:
             file_path = file_info['Path']
             if file_path.endswith('.py'):
                 datahub_url = f'{self.dataset_endpoint}/api/v1/datasets/{dataset_id}/repo/files?' \
-                              f'Revision={version}&Path={file_path}'
+                              f'Revision={revision}&Path={file_path}'
                 r = requests.get(datahub_url)
                 r.raise_for_status()
                 content = r.json()['Data']['Content']
diff --git a/modelscope/hub/constants.py b/modelscope/hub/constants.py
index bf11b59d..16a6a54b 100644
--- a/modelscope/hub/constants.py
+++ b/modelscope/hub/constants.py
@@ -11,8 +11,12 @@ LOGGER_NAME = 'ModelScopeHub'
 
 class Licenses(object):
     APACHE_V2 = 'Apache License 2.0'
-    GPL = 'GPL'
-    LGPL = 'LGPL'
+    GPL_V2 = 'GPL-2.0'
+    GPL_V3 = 'GPL-3.0'
+    LGPL_V2_1 = 'LGPL-2.1'
+    LGPL_V3 = 'LGPL-3.0'
+    AFL_V3 = 'AFL-3.0'
+    ECL_V2 = 'ECL-2.0'
     MIT = 'MIT'
 
 
diff --git a/modelscope/hub/file_download.py b/modelscope/hub/file_download.py
index 9eada04b..d294ed9a 100644
--- a/modelscope/hub/file_download.py
+++ b/modelscope/hub/file_download.py
@@ -20,6 +20,7 @@ from tqdm import tqdm
 
 from modelscope import __version__
 from modelscope.utils.logger import get_logger
+from ..utils.constant import DEFAULT_MODEL_REVISION
 from .api import HubApi, ModelScopeConfig
 from .constants import (DEFAULT_MODELSCOPE_GROUP, LOGGER_NAME,
                         MODEL_ID_SEPARATOR)
@@ -35,7 +36,7 @@ logger = get_logger()
 def model_file_download(
     model_id: str,
     file_path: str,
-    revision: Optional[str] = 'master',
+    revision: Optional[str] = DEFAULT_MODEL_REVISION,
     cache_dir: Optional[str] = None,
     user_agent: Union[Dict, str, None] = None,
     local_files_only: Optional[bool] = False,
@@ -55,7 +56,7 @@ def model_file_download(
             Path of the file to be downloaded, relative to the root of model repo
         revision(`str`, *optional*):
             revision of the model file to be downloaded.
-            Can be any of a branch, tag or commit hash, default to `master`
+            Can be any of a branch, tag or commit hash
         cache_dir (`str`, `Path`, *optional*):
             Path to the folder where cached files are stored.
         user_agent (`dict`, `str`, *optional*):
@@ -120,8 +121,7 @@ def model_file_download(
             model_id=model_id,
             revision=revision,
             recursive=True,
-            use_cookies=False if cookies is None else cookies,
-        )
+            use_cookies=False if cookies is None else cookies)
 
         for model_file in model_files:
             if model_file['Type'] == 'tree':
diff --git a/modelscope/hub/repository.py b/modelscope/hub/repository.py
index 6c112eb2..ee2b8da3 100644
--- a/modelscope/hub/repository.py
+++ b/modelscope/hub/repository.py
@@ -3,6 +3,7 @@ from typing import Optional
 
 from modelscope.hub.errors import GitError, InvalidParameter
 from modelscope.utils.logger import get_logger
+from ..utils.constant import DEFAULT_MODEL_REVISION
 from .api import ModelScopeConfig
 from .git import GitCommandWrapper
 from .utils.utils import get_endpoint
@@ -18,7 +19,7 @@ class Repository:
         self,
         model_dir: str,
         clone_from: str,
-        revision: Optional[str] = 'master',
+        revision: Optional[str] = DEFAULT_MODEL_REVISION,
         auth_token: Optional[str] = None,
         git_path: Optional[str] = None,
     ):
@@ -76,15 +77,15 @@ class Repository:
 
     def push(self,
              commit_message: str,
-             branch: Optional[str] = 'master',
-             force: Optional[bool] = False):
+             branch: Optional[str] = DEFAULT_MODEL_REVISION,
+             force: bool = False):
         """Push local files to remote, this method will do.
            git add
            git commit
            git push
         Args:
             commit_message (str): commit message
-            branch (Optional[str]): which branch to push. Defaults to 'master'.
+            branch (Optional[str], optional): which branch to push.
             force (Optional[bool]): whether to use forced-push.
         """
         if commit_message is None or not isinstance(commit_message, str):
diff --git a/modelscope/hub/snapshot_download.py b/modelscope/hub/snapshot_download.py
index b52cb42d..826888a8 100644
--- a/modelscope/hub/snapshot_download.py
+++ b/modelscope/hub/snapshot_download.py
@@ -4,6 +4,7 @@ from pathlib import Path
 from typing import Dict, Optional, Union
 
 from modelscope.utils.logger import get_logger
+from ..utils.constant import DEFAULT_MODEL_REVISION
 from .api import HubApi, ModelScopeConfig
 from .errors import NotExistError
 from .file_download import (get_file_download_url, http_get_file,
@@ -15,7 +16,7 @@ logger = get_logger()
 
 
 def snapshot_download(model_id: str,
-                      revision: Optional[str] = 'master',
+                      revision: Optional[str] = DEFAULT_MODEL_REVISION,
                       cache_dir: Union[str, Path, None] = None,
                       user_agent: Optional[Union[Dict, str]] = None,
                       local_files_only: Optional[bool] = False) -> str:
diff --git a/modelscope/models/base.py b/modelscope/models/base.py
index 03cc2d4d..96bba51a 100644
--- a/modelscope/models/base.py
+++ b/modelscope/models/base.py
@@ -7,7 +7,7 @@ from typing import Dict, Optional, Union
 from modelscope.hub.snapshot_download import snapshot_download
 from modelscope.models.builder import build_model
 from modelscope.utils.config import Config
-from modelscope.utils.constant import ModelFile
+from modelscope.utils.constant import DEFAULT_MODEL_REVISION, ModelFile
 from modelscope.utils.logger import get_logger
 
 logger = get_logger()
@@ -44,7 +44,7 @@ class Model(ABC):
     @classmethod
     def from_pretrained(cls,
                         model_name_or_path: str,
-                        revision: Optional[str] = 'master',
+                        revision: Optional[str] = DEFAULT_MODEL_REVISION,
                         *model_args,
                         **kwargs):
         """ Instantiate a model from local directory or remote model repo. Note
diff --git a/modelscope/pipelines/builder.py b/modelscope/pipelines/builder.py
index 61df971d..05a03166 100644
--- a/modelscope/pipelines/builder.py
+++ b/modelscope/pipelines/builder.py
@@ -6,7 +6,7 @@ from modelscope.hub.snapshot_download import snapshot_download
 from modelscope.metainfo import Pipelines
 from modelscope.models.base import Model
 from modelscope.utils.config import ConfigDict
-from modelscope.utils.constant import Tasks
+from modelscope.utils.constant import DEFAULT_MODEL_REVISION, Tasks
 from modelscope.utils.hub import read_config
 from modelscope.utils.registry import Registry, build_from_cfg
 from .base import Pipeline
@@ -105,7 +105,7 @@ def pipeline(task: str = None,
              pipeline_name: str = None,
              framework: str = None,
              device: int = -1,
-             model_revision: Optional[str] = 'master',
+             model_revision: Optional[str] = DEFAULT_MODEL_REVISION,
              **kwargs) -> Pipeline:
     """ Factory method to build an obj:`Pipeline`.
 
diff --git a/modelscope/pipelines/util.py b/modelscope/pipelines/util.py
index ceee782f..03383bc1 100644
--- a/modelscope/pipelines/util.py
+++ b/modelscope/pipelines/util.py
@@ -5,7 +5,7 @@ from typing import List, Optional, Union
 from modelscope.hub.api import HubApi
 from modelscope.hub.file_download import model_file_download
 from modelscope.utils.config import Config
-from modelscope.utils.constant import ModelFile
+from modelscope.utils.constant import DEFAULT_MODEL_REVISION, ModelFile
 from modelscope.utils.logger import get_logger
 
 logger = get_logger()
@@ -21,7 +21,7 @@ def is_config_has_model(cfg_file):
 
 
 def is_official_hub_path(path: Union[str, List],
-                         revision: Optional[str] = 'master'):
+                         revision: Optional[str] = DEFAULT_MODEL_REVISION):
     """ Whether path is an official hub name or a valid local
     path to official hub directory.
     """
diff --git a/modelscope/utils/constant.py b/modelscope/utils/constant.py
index ebed30fb..cdd346b3 100644
--- a/modelscope/utils/constant.py
+++ b/modelscope/utils/constant.py
@@ -117,3 +117,6 @@ class Requirements(object):
 
 TENSORFLOW = 'tensorflow'
 PYTORCH = 'pytorch'
+
+DEFAULT_MODEL_REVISION = 'master'
+DEFAULT_DATASET_REVISION = 'master'
diff --git a/modelscope/utils/hub.py b/modelscope/utils/hub.py
index db224fb9..24b3246c 100644
--- a/modelscope/utils/hub.py
+++ b/modelscope/utils/hub.py
@@ -10,7 +10,7 @@ from modelscope.hub.constants import Licenses, ModelVisibility
 from modelscope.hub.file_download import model_file_download
 from modelscope.hub.snapshot_download import snapshot_download
 from modelscope.utils.config import Config
-from modelscope.utils.constant import ModelFile
+from modelscope.utils.constant import DEFAULT_MODEL_REVISION, ModelFile
 from .logger import get_logger
 
 logger = get_logger(__name__)
@@ -22,7 +22,7 @@ def create_model_if_not_exist(
         chinese_name: str,
         visibility: Optional[int] = ModelVisibility.PUBLIC,
         license: Optional[str] = Licenses.APACHE_V2,
-        revision: Optional[str] = 'master'):
+        revision: Optional[str] = DEFAULT_MODEL_REVISION):
     exists = True
     try:
         api.get_model(model_id=model_id, revision=revision)
@@ -42,12 +42,13 @@ def create_model_if_not_exist(
         return True
 
 
-def read_config(model_id_or_path: str, revision: Optional[str] = 'master'):
+def read_config(model_id_or_path: str,
+                revision: Optional[str] = DEFAULT_MODEL_REVISION):
     """ Read config from hub or local path
 
     Args:
         model_id_or_path (str): Model repo name or local directory path.
-
+        revision: revision of the model when getting from the hub
     Return:
         config (:obj:`Config`): config object
     """