diff --git a/README.md b/README.md
index c6f78a0..a73e24b 100644
--- a/README.md
+++ b/README.md
@@ -286,7 +286,7 @@ Step 2.9: if c == CMD_UPDATE then 修改书籍
 Step 2.10: if c == CMD_SORT then 排序书籍
 Step 2.11: if c == CMD_QUIT then 选择退出
 ```
-![main](Graph\Main.drawio.svg)
+![main](file:///C:/Users/yangt/Desktop/text1/Graph/Main.drawio.svg)
 ## DoAddBook
 ```
 Step 1: if 数据库满 then 提示数据库满并结束