diff --git a/EssOS/项目分析.md b/EssOS/项目分析.md
index 4123d11..3a4bbf1 100644
--- a/EssOS/项目分析.md
+++ b/EssOS/项目分析.md
@@ -35,6 +35,7 @@ sequenceDiagram
 ```flow
 str=>start: Start
 end=>end
+
 ```