diff --git a/notes/剑指 offer 题解.md b/notes/剑指 offer 题解.md
index a7b6db99..e1655922 100644
--- a/notes/剑指 offer 题解.md	
+++ b/notes/剑指 offer 题解.md	
@@ -170,7 +170,7 @@ Given target = 20, return false.
 
 当前元素的查找区间为左下角的所有元素，例如元素 12 的查找区间如下：
 
-<div align="center"> <img src="../pics//026d3cb4-67f7-4a83-884d-8032f57ec446.png" width="200"/> </div><br>
+<div align="center"> <img src="../pics//026d3cb4-67f7-4a83-884d-8032f57ec446.png" width="250"/> </div><br>
 
 复杂度：O(M + N) + O(1)