diff --git a/zh-cn/device-dev/kernel/kernel-mini-overview.md b/zh-cn/device-dev/kernel/kernel-mini-overview.md
index fb44d17e6d4fa08d2d068de1df4847320771885a..189579d8572dc5cf90f7440d969a517506d4e905 100644
--- a/zh-cn/device-dev/kernel/kernel-mini-overview.md
+++ b/zh-cn/device-dev/kernel/kernel-mini-overview.md
@@ -39,7 +39,7 @@ LiteOS-M已经支持ARM Cortex-M3、ARM Cortex-M4、ARM Cortex-M7、ARM Cortex-M
 
 目录结构如下。
 
-```
+```tex
 /kernel/liteos_m
 ├── arch                 # 内核指令架构层目录
 │   ├── arm              # arm 架构代码