diff --git a/docs/network/计算机网络.md b/docs/network/计算机网络.md
index 8c13cb7e..69ed4084 100644
--- a/docs/network/计算机网络.md
+++ b/docs/network/计算机网络.md
@@ -77,7 +77,7 @@
 
 **详细示意图（图片来源不详）**
 
-![](https://user-images.githubusercontent.com/52881289/128109410-b3619cfa-ce64-4f69-86ac-ececa4e014e4.png)
+![](https://img-blog.csdnimg.cn/img_convert/0c9f470819684156cfdc27c682db4def.png)
 
 ### 2.2 为什么要三次握手