diff --git a/pages/avatar/index.vue b/pages/avatar/index.vue
index 7dcc573..bba385f 100644
--- a/pages/avatar/index.vue
+++ b/pages/avatar/index.vue
@@ -713,7 +713,8 @@ onShareAppMessage(async () => {
   return {
     title: "我做了一个新头像，真的太好看了",
     path: `/pages/avatar/detail?shareToken=${shareToken}`,
-    imageUrl, // 使用默认封面或 popularCards 的封面
+    imageUrl:
+      imageUrl + "?imageMogr2/thumbnail/!500x400r/gravity/Center/crop/500x400",
   };
 });