diff --git a/README.md b/README.md
index 11eac7f..76fec0a 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ Effective Java 第三版翻译校对群：[909059971](https://jq.qq.com/?_wv=102
 ##  品牌衣服一折购
 
 <center>
-<img width="300" src="http://sjsdfg.gitee.io/effective-java-3rd-chinese/images/shop.jpg" />
+<img width="400" src="http://sjsdfg.gitee.io/effective-java-3rd-chinese/images/shop.jpg" />
 </center>
 
 ## 额外资源