diff --git a/data_chain/apps/service/session_service.py b/data_chain/apps/service/session_service.py
index 08464b04ad5ea9f0e1d8c6c9d403c9da43351a80..74b99dae950d069d6850fc10e3ad5cea90b6ea6c 100644
--- a/data_chain/apps/service/session_service.py
+++ b/data_chain/apps/service/session_service.py
@@ -68,8 +68,10 @@ async def get_user_sub(request: HTTPConnection) -> uuid:
         if not session:
             raise UserHTTPException(status_code=status.HTTP_401_UNAUTHORIZED,
                                     retcode=401, rtmsg="Authentication Error.", data="")
-
+        user_name = session.user_name
+        if not user_name:
+            user_name = user_sub
         # 创建用户实体时传递用户名
-        user_entity = await Convertor.convert_user_sub_and_user_name_to_user_entity(session.user_sub, session.user_name)
+        user_entity = await Convertor.convert_user_sub_and_user_name_to_user_entity(user_sub, user_name)
         await UserManager.add_user(user_entity)
     return user_sub