diff --git a/EssOS/项目分析.md b/EssOS/项目分析.md
index c34196c..b31c682 100644
--- a/EssOS/项目分析.md
+++ b/EssOS/项目分析.md
@@ -33,7 +33,7 @@ sequenceDiagram
 场景2
 
 ```flow
-A-. 提交申请 .->B;
+A -- 提交申请 -->B;
 ```