diff --git a/backend/app/service/FeishuNotificationService.php b/backend/app/service/FeishuNotificationService.php
index 7fcac3a..557cff1 100644
--- a/backend/app/service/FeishuNotificationService.php
+++ b/backend/app/service/FeishuNotificationService.php
@@ -389,7 +389,7 @@ class FeishuNotificationService
                 'tag' => 'div',
                 'text' => [
                     'content' => $content,
-                    'tag' => 'plain_text',
+                    'tag' => 'lark_md',
                 ],
             ];
         }