diff --git a/arch_spec.md b/arch_spec.md
index 231a5662..0b3650f5 100755
--- a/arch_spec.md
+++ b/arch_spec.md
@@ -1,4 +1,4 @@
-``
+```
 .
 ├── components                                                  --- 可选组件，可裁剪，依赖kernel
 │   ├── cppsupport                                              --- C++支持