diff --git a/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md b/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
index a0d5e22b3e34e673058f9ee5763c0bd54b645c95..926bc3aaad951784a61b55dac94c213da2aa6681 100644
--- a/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
+++ b/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
@@ -1,4 +1,4 @@
-## 设备使用信息统计
+# 设备使用信息统计
 
 ## 场景介绍