diff --git a/api/app/controllers/service/app_api_controller.py b/api/app/controllers/service/app_api_controller.py
index a8f78729..31e799d2 100644
--- a/api/app/controllers/service/app_api_controller.py
+++ b/api/app/controllers/service/app_api_controller.py
@@ -235,7 +235,7 @@ async def chat(
 
                     message=payload.message,
                     conversation_id=conversation.id,  # 使用已创建的会话 ID
-                    user_id=new_end_user.id,  # 转换为字符串
+                    user_id=end_user_id,  # 转换为字符串
                     variables=payload.variables,
                     config=config,
                     web_search=web_search,
@@ -268,7 +268,7 @@ async def chat(
 
             message=payload.message,
             conversation_id=conversation.id,  # 使用已创建的会话 ID
-            user_id=new_end_user.id,  # 转换为字符串
+            user_id=end_user_id,  # 转换为字符串
             variables=payload.variables,
             config=config,
             web_search=web_search,