diff --git a/apps/assets/api/system_user.py b/apps/assets/api/system_user.py
index dc134ee97..ff3f81f36 100644
--- a/apps/assets/api/system_user.py
+++ b/apps/assets/api/system_user.py
@@ -28,7 +28,7 @@ class SystemUserViewSet(OrgBulkModelViewSet):
     System user api set, for add,delete,update,list,retrieve resource
     """
     model = SystemUser
-    filter_fields = ("name", "username")
+    filter_fields = ("name", "username", "protocol")
     search_fields = filter_fields
     serializer_class = serializers.SystemUserSerializer
     serializer_classes = {