diff --git a/zh-cn/device-dev/kernel/kernel-mini-extend-file-lit.md b/zh-cn/device-dev/kernel/kernel-mini-extend-file-lit.md
index be7172df9b76cb985c47322d92780c8b036c40a6..c822d3ee56d823a7f8364b5d8617fbdfb48b4cef 100644
--- a/zh-cn/device-dev/kernel/kernel-mini-extend-file-lit.md
+++ b/zh-cn/device-dev/kernel/kernel-mini-extend-file-lit.md
@@ -94,7 +94,7 @@ int main(void) {
 ```
 
 
-### 结果验证
+ **结果验证** 
 
 首次编译运行得到的结果为：