diff --git a/api/apps/user_app.py b/api/apps/user_app.py
index 53876826c..50c0b4d76 100644
--- a/api/apps/user_app.py
+++ b/api/apps/user_app.py
@@ -98,6 +98,9 @@ async def login():
         return get_json_result(data=False, code=RetCode.AUTHENTICATION_ERROR, message="Unauthorized!")
 
     email = json_body.get("email", "")
+    if email == "admin@ragflow.io":
+        return get_json_result(data=False, code=RetCode.AUTHENTICATION_ERROR, message="Default admin account cannot be used to login normal services!")
+    
     users = UserService.query(email=email)
     if not users:
         return get_json_result(