diff --git a/zh-cn/device-dev/subsystems/subsys-security-devicesecuritylevel.md b/zh-cn/device-dev/subsystems/subsys-security-devicesecuritylevel.md
index 37f5e10124f928f06b770af1ff291329de90352c..de34cb5324cc0f860680cf506923254404dac8be 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