diff --git a/app/wechat/controller/Auto.php b/app/wechat/controller/Auto.php
index 14d06aa977..d6234f731e 100644
--- a/app/wechat/controller/Auto.php
+++ b/app/wechat/controller/Auto.php
@@ -101,6 +101,8 @@ protected function _form_filter(array &$data)
         if ($this->request->isGet()) {
             $public = dirname($this->request->basefile(true));
             $this->defaultImage = "{$public}/static/theme/img/image.png";
+        } else {
+            $data['content'] = strip_tags($data['content'] ?? '', '<a>');
         }
     }
 
diff --git a/app/wechat/controller/Keys.php b/app/wechat/controller/Keys.php
index 5f013a9f18..590fc9433d 100644
--- a/app/wechat/controller/Keys.php
+++ b/app/wechat/controller/Keys.php
@@ -169,7 +169,7 @@ protected function _form_filter(array &$data)
             if (WechatKeys::mk()->where($map)->count() > 0) {
                 $this->error('该关键字已经存在！');
             }
-            $data['content'] = strip_tags($data['content'], '<a>');
+            $data['content'] = strip_tags($data['content'] ?? '', '<a>');
         } elseif ($this->request->isGet()) {
             $public = dirname($this->request->basefile(true));
             $this->defaultImage = "{$public}/static/theme/img/image.png";