diff --git a/service/app/admin/controller/QaController.php b/service/app/admin/controller/QaController.php
index 2a219673..c3f25b65 100644
--- a/service/app/admin/controller/QaController.php
+++ b/service/app/admin/controller/QaController.php
@@ -114,7 +114,7 @@ class QaController extends base
         }
 
         $qaQuestion = $post['qaQuestions'] ?? null;
-        unset($post['qaQuestions']);
+        unset($post['qaQuestions'], $post['update_time']);
         $post['create_time'] = time();
 
         try {