diff --git a/SUMMARY.md b/SUMMARY.md
index d8cc2f1..f8aa7ab 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -46,13 +46,13 @@
    * [工具和示例](advanced_network/example.md)
    * [编辑网络配置文件](advanced_network/config_file.md)
    * [实例：创建一个点到点连接](advanced_network/ptp.md)
-* [容器安全](container_security/README.md)
-   * [内核名字空间](container_security/kernel_ns.md)
-   * [控制组](container_security/control_group.md)
-   * [守护进程安全](container_security/daemon_sec.md)
-   * [内核权限](container_security/kernel_capability.md)
-   * [其他内核安全特性](container_security/other_feature.md)
-   * [结论](container_security/summary.md)
+* [安全](security/README.md)
+   * [内核名字空间](security/kernel_ns.md)
+   * [控制组](security/control_group.md)
+   * [守护进程安全](security/daemon_sec.md)
+   * [内核权限](security/kernel_capability.md)
+   * [其他内核安全特性](security/other_feature.md)
+   * [结论](security/summary.md)
 * [Dockerfile](dockerfile/README.md)
 * [底层实现](underly/README.md)
    * [基本架构](underly/arch.md)
diff --git a/install/ubuntu144.md b/install/ubuntu144.md
index 03347f3..b366342 100644
--- a/install/ubuntu144.md
+++ b/install/ubuntu144.md
@@ -8,7 +8,7 @@ $ sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker
 $ sudo sed -i '$acomplete -F _docker docker' /etc/bash_completion.d/docker.io
 ```
 
-如果使用操作系统自带包安装docker  ，使用上面的办法，安装的版本是0.9.1 (不建议，因为1.0 生产版本已经发布，下面介绍安装方法）
+如果使用操作系统自带包安装docker，使用上面的办法，安装的版本是0.9.1 (不建议，因为1.0 生产版本已经发布，下面介绍安装方法）
 
 ###通过docker源安装最新版本
 如果要安装最新的docker版本，那么需要安装apt-get的https支持
diff --git a/container_security/README.md b/security/README.md
similarity index 93%
rename from container_security/README.md
rename to security/README.md
index ae209e0..a2305e7 100644
--- a/container_security/README.md
+++ b/security/README.md
@@ -1,4 +1,4 @@
-#容器安全
+#安全
 评估Docker的安全性时，主要考虑3个方面:
 * 由内核中名字空间和控制组提供的容器的内在安全
 * Docker程序本身的抗攻击性
diff --git a/container_security/control_group.md b/security/control_group.md
similarity index 100%
rename from container_security/control_group.md
rename to security/control_group.md
diff --git a/container_security/daemon_sec.md b/security/daemon_sec.md
similarity index 100%
rename from container_security/daemon_sec.md
rename to security/daemon_sec.md
diff --git a/container_security/kernel_capability.md b/security/kernel_capability.md
similarity index 100%
rename from container_security/kernel_capability.md
rename to security/kernel_capability.md
diff --git a/container_security/kernel_ns.md b/security/kernel_ns.md
similarity index 100%
rename from container_security/kernel_ns.md
rename to security/kernel_ns.md
diff --git a/container_security/other_feature.md b/security/other_feature.md
similarity index 100%
rename from container_security/other_feature.md
rename to security/other_feature.md
diff --git a/container_security/summary.md b/security/summary.md
similarity index 100%
rename from container_security/summary.md
rename to security/summary.md