diff --git a/zh-cn/device-dev/porting/standard-system-porting-guide.md b/zh-cn/device-dev/porting/standard-system-porting-guide.md
index 3b65c4866929d00474c227c0e3deceedf3fa9aa3..88fa09f7bee81ec60be4a9ae9fb5f7a731f04b22 100644
--- a/zh-cn/device-dev/porting/standard-system-porting-guide.md
+++ b/zh-cn/device-dev/porting/standard-system-porting-guide.md
@@ -116,9 +116,8 @@ BUILD.gn是subsystem构建的唯一入口。
 
 期望的构建结果
 
-  | | |
-| -------- | -------- |
 | 文件 | 文件说明 | 
+| -------- | -------- |
 | $root_build_dir/packages/phone/images/uImage | 内核镜像 | 
 | $root_build_dir/packages/phone/images/uboot | bootloader镜像 |