diff --git a/docs/ha.md b/docs/ha.md
index f53080f8b..c85e055d8 100644
--- a/docs/ha.md
+++ b/docs/ha.md
@@ -1,4 +1,4 @@
-<h1>高可用性High Availability</h1>
+<h2>高可用性High Availability</h2>
 
 架构Architecture