diff --git a/anolis-courses/KeenTune/auto-tuning/step1.md b/anolis-courses/KeenTune/auto-tuning/step1.md
index d5ef82f13f67e7dd4683114be08bbffaac623414..70e4fe15eb321c690301ab7c174e0f72fce15afb 100644
--- a/anolis-courses/KeenTune/auto-tuning/step1.md
+++ b/anolis-courses/KeenTune/auto-tuning/step1.md
@@ -4,6 +4,7 @@ STEP 1. 部署安装KeenTune环境
 
 ACTION: 请将以下脚本copy到文件中并执行
 ps. 如果已经安装过请跳过此步骤
+
 ```s
 #!/bin/bash
 json_name="sysctl.json, nginx.json"
diff --git a/anolis-courses/KeenTune/profile-setting/step1.md b/anolis-courses/KeenTune/profile-setting/step1.md
index d5ef82f13f67e7dd4683114be08bbffaac623414..70e4fe15eb321c690301ab7c174e0f72fce15afb 100644
--- a/anolis-courses/KeenTune/profile-setting/step1.md
+++ b/anolis-courses/KeenTune/profile-setting/step1.md
@@ -4,6 +4,7 @@ STEP 1. 部署安装KeenTune环境
 
 ACTION: 请将以下脚本copy到文件中并执行
 ps. 如果已经安装过请跳过此步骤
+
 ```s
 #!/bin/bash
 json_name="sysctl.json, nginx.json"
diff --git a/anolis-courses/KeenTune/sensitizing/step1.md b/anolis-courses/KeenTune/sensitizing/step1.md
index d5ef82f13f67e7dd4683114be08bbffaac623414..70e4fe15eb321c690301ab7c174e0f72fce15afb 100644
--- a/anolis-courses/KeenTune/sensitizing/step1.md
+++ b/anolis-courses/KeenTune/sensitizing/step1.md
@@ -4,6 +4,7 @@ STEP 1. 部署安装KeenTune环境
 
 ACTION: 请将以下脚本copy到文件中并执行
 ps. 如果已经安装过请跳过此步骤
+
 ```s
 #!/bin/bash
 json_name="sysctl.json, nginx.json"