diff --git a/readme.md b/readme.md
index a8c0d1e2..61623a44 100644
--- a/readme.md
+++ b/readme.md
@@ -42,13 +42,13 @@ __options__ : `PlumeThemeOptions`
 
 ### 效果图
 
-![](/docs/preview-home.png)
+![](/docs/preview-home.png?a=1)
 
-![](/docs/preview-blog.png)
+![](/docs/preview-blog.png?a=1)
 
-![](/docs/preview-post.png)
+![](/docs/preview-post.png?a=1)
 
-![](/docs/preview-note.png)
+![](/docs/preview-note.png?a=1)
   
 
 ## 内置插件