diff --git a/README.md b/README.md
index b739afc4..21d81675 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 
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-<img src="https://github.com/CyC2018/InterviewNotes/blob/master/pics/handbook.png" alt="" width="200"/>
+<img src="https://github.com/CyC2018/InterviewNotes/blob/master/pics/handbook.png" alt="" width="250"/>
 <br>
 
 # 数据结构与算法