diff --git "a/notes/\350\256\241\347\256\227\346\234\272\347\275\221\347\273\234.md" "b/notes/\350\256\241\347\256\227\346\234\272\347\275\221\347\273\234.md"
index 54234f802f0b75e131fa0254dbbae105619ed484..5618f7656533a5076ef56b6e6195fcbe2173ee58 100644
--- "a/notes/\350\256\241\347\256\227\346\234\272\347\275\221\347\273\234.md"
+++ "b/notes/\350\256\241\347\256\227\346\234\272\347\275\221\347\273\234.md"
@@ -72,7 +72,7 @@
 
 互联网交换点 IXP 允许两个 ISP 直接相连而不用经过第三个 ISP。
 
-![undefined](index_files/Technology-ComputerNetworking-Internet-ISPs.png "undefined")
+<div align="center"> <img src="../pics//Technology-ComputerNetworking-Internet-ISPs.png"/> </div><br>
 
 
 ## 主机之间的通信方式
diff --git a/pics/Technology-ComputerNetworking-Internet-ISPs.png b/pics/Technology-ComputerNetworking-Internet-ISPs.png
new file mode 100644
index 0000000000000000000000000000000000000000..72a30a7b7b1b46c00c5531304d4dcd2f3ed04ef1
Binary files /dev/null and b/pics/Technology-ComputerNetworking-Internet-ISPs.png differ