diff --git a/modelscope/hub/api.py b/modelscope/hub/api.py
index 9297cc35..f1f8ed1e 100644
--- a/modelscope/hub/api.py
+++ b/modelscope/hub/api.py
@@ -809,7 +809,7 @@ class ModelScopeConfig:
             user_name,
         )
         if isinstance(user_agent, dict):
-            ua += '; '.join(f'{k}/{v}' for k, v in user_agent.items())
+            ua += '; ' + '; '.join(f'{k}/{v}' for k, v in user_agent.items())
         elif isinstance(user_agent, str):
-            ua += ';' + user_agent
+            ua += '; ' + user_agent
         return ua
diff --git a/modelscope/trainers/cv/image_classifition_trainer.py b/modelscope/trainers/cv/image_classifition_trainer.py
index 21e98910..e285e4d7 100644
--- a/modelscope/trainers/cv/image_classifition_trainer.py
+++ b/modelscope/trainers/cv/image_classifition_trainer.py
@@ -18,7 +18,7 @@ from modelscope.msdatasets.ms_dataset import MsDataset
 from modelscope.preprocessors.base import Preprocessor
 from modelscope.trainers.base import BaseTrainer
 from modelscope.trainers.builder import TRAINERS
-from modelscope.utils.constant import DEFAULT_MODEL_REVISION, ModelFile
+from modelscope.utils.constant import DEFAULT_MODEL_REVISION, Invoke, ModelFile
 from modelscope.utils.logger import get_logger
 
 
@@ -202,7 +202,9 @@ class ImageClassifitionTrainer(BaseTrainer):
                     model) else os.path.dirname(model)
             else:
                 self.model_dir = snapshot_download(
-                    model, revision=model_revision)
+                    model,
+                    revision=model_revision,
+                    user_agent={Invoke.KEY: Invoke.TRAINER})
             if cfg_file is None:
                 cfg_file = os.path.join(self.model_dir,
                                         ModelFile.CONFIGURATION)