diff --git a/app/Services/Tg/Hook/Mod/ArticleCache.php b/app/Services/Tg/Hook/Mod/ArticleCache.php
index 2a6e96b3..00fba3a1 100644
--- a/app/Services/Tg/Hook/Mod/ArticleCache.php
+++ b/app/Services/Tg/Hook/Mod/ArticleCache.php
@@ -17,6 +17,7 @@ class ArticleCache extends Base {
     {
         $this->oDog = new Dog(new ModelArticleCache());
         $this->oDog->_setDogName("articleCache");
+        $this->oDog->_setJsonField(["content"]);
         $this->oDog->_setStrField(["content"]);
         $this->aUpdate = $aUpdate;
     }