diff --git a/apps/authentication/views/base.py b/apps/authentication/views/base.py
index 28b4827a1..e93951e00 100644
--- a/apps/authentication/views/base.py
+++ b/apps/authentication/views/base.py
@@ -24,7 +24,7 @@ class BaseLoginCallbackView(AuthMixin, FlashMessageMixin, View):
         super().__init__()
         self.client_type = None
         self.client_auth_params = {}
-        self.user_type = None
+        self.user_type = ''
         self.auth_backend = None
         self.create_user_if_not_exist_setting = ''
         # 提示信息