diff --git a/zh-cn/device-dev/subsystems/subsys-security-devicesecuritylevel.md b/zh-cn/device-dev/subsystems/subsys-security-devicesecuritylevel.md
index 86252a4e700a8ae390e1126e7f629ca3eeab9605..41de75c784983f5ac62badd3931d0edc25f762a5 100644
--- a/zh-cn/device-dev/subsystems/subsys-security-devicesecuritylevel.md
+++ b/zh-cn/device-dev/subsystems/subsys-security-devicesecuritylevel.md
@@ -1,4 +1,4 @@
-# 设备安全等级管理开发指南
+# 设备安全等级管理开发指导
 
 ## 概述