diff --git a/apps/perms/serializers/asset/permission.py b/apps/perms/serializers/asset/permission.py
index 1ee95afee..f00b0d606 100644
--- a/apps/perms/serializers/asset/permission.py
+++ b/apps/perms/serializers/asset/permission.py
@@ -83,22 +83,14 @@ class AssetPermissionSerializer(BulkOrgResourceModelSerializer):
         return queryset
 
     def to_internal_value(self, data):
-        if not data['assets']:
-            data['assets'] = []
-        if not data['system_users']:
-            data['system_users'] = []
-        if not data['users']:
-            data['users'] = []
-        if not data['user_groups']:
-            data['user_groups'] = []
-        if not data['nodes']:
-            data['nodes'] = []
         # 系统用户是必填项
+        system_users = data.get('system_users', [])
         system_users_display = data.pop('system_users_display', '')
         for i in range(len(system_users_display)):
             system_user = SystemUser.objects.filter(name=system_users_display[i]).first()
-            if system_user and system_user.id not in data['system_users']:
-                data['system_users'].append(system_user.id)
+            if system_user and system_user.id not in system_users:
+                system_users.append(system_user.id)
+        data['system_users'] = system_users
         return super().to_internal_value(data)
 
     def perform_display_create(self, instance, **kwargs):