diff --git a/EssOS/项目分析.md b/EssOS/项目分析.md
index 9b16bcb..9ce8f8f 100644
--- a/EssOS/项目分析.md
+++ b/EssOS/项目分析.md
@@ -33,7 +33,7 @@ sequenceDiagram
 场景2
 
 ```flow
-
+str=>Start: 
 ```