diff --git a/install/mindspore_cpu_install.md b/install/mindspore_cpu_install.md
index ba4c8e689aac880bca8386d7e95ebcaa659d078a..f4f03ab1d1d15590b74c1500ec76b296f1c67ceb 100644
--- a/install/mindspore_cpu_install.md
+++ b/install/mindspore_cpu_install.md
@@ -97,7 +97,7 @@
 
 | 版本号                 | 操作系统            | 可执行文件安装依赖                                           | 源码编译安装依赖         |
 | ---------------------- | :------------------ | :----------------------------------------------------------- | :----------------------- |
-| MindArmour master | Ubuntu 16.04（及以上） x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master<br> - 其他依赖项参见[setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py) | 与可执行文件安装依赖相同 |
+| MindArmour master | Ubuntu 18.04 x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master<br> - 其他依赖项参见[setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py) | 与可执行文件安装依赖相同 |
 
 - 在联网状态下，安装whl包时会自动下载`setup.py`中的依赖项，其余情况需自行安装。
 
diff --git a/install/mindspore_cpu_install_en.md b/install/mindspore_cpu_install_en.md
index 6170254ae2690bce51e2fe5db63bbe4497088440..53c44a7d88f67c2f9b11ef913f2d3dc376925fc3 100644
--- a/install/mindspore_cpu_install_en.md
+++ b/install/mindspore_cpu_install_en.md
@@ -97,7 +97,7 @@ If you need to conduct AI model security research or enhance the security of the
 
 | Version | Operating System | Executable File Installation Dependencies | Source Code Compilation and Installation Dependencies |
 | ---- | :--- | :--- | :--- |
-| MindArmour master | Ubuntu 16.04 or later x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master <br> - For details about other dependency items, see [setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py). | Same as the executable file installation dependencies. |
+| MindArmour master | Ubuntu 18.04 x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master <br> - For details about other dependency items, see [setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py). | Same as the executable file installation dependencies. |
 
 - When the network is connected, dependency items in the `setup.py` file are automatically downloaded during .whl package installation. In other cases, you need to manually install dependency items.
 
diff --git a/install/mindspore_gpu_install.md b/install/mindspore_gpu_install.md
index 6fec7a71c51708a188ec475332e4169fa737f47d..c44f60e72a13fcf9fc384c8e99c3c77d6e503f25 100644
--- a/install/mindspore_gpu_install.md
+++ b/install/mindspore_gpu_install.md
@@ -189,7 +189,7 @@
 
 | 版本号                 | 操作系统            | 可执行文件安装依赖                                           | 源码编译安装依赖         |
 | ---------------------- | :------------------ | :----------------------------------------------------------- | :----------------------- |
-| MindArmour master | Ubuntu 16.04（及以上） x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master <br> - 其他依赖项参见[setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py) | 与可执行文件安装依赖相同 |
+| MindArmour master | Ubuntu 18.04 x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master <br> - 其他依赖项参见[setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py) | 与可执行文件安装依赖相同 |
 
 - 在联网状态下，安装whl包时会自动下载`setup.py`中的依赖项，其余情况需自行安装。
 
diff --git a/install/mindspore_gpu_install_en.md b/install/mindspore_gpu_install_en.md
index d8ed2663716a0aa00562a282559c4a898050f171..51a38d5f4e429bc8430cdca23d39a6f39d45e9aa 100644
--- a/install/mindspore_gpu_install_en.md
+++ b/install/mindspore_gpu_install_en.md
@@ -191,7 +191,7 @@ If you need to conduct AI model security research or enhance the security of the
 
 | Version | Operating System | Executable File Installation Dependencies | Source Code Compilation and Installation Dependencies |
 | ---- | :--- | :--- | :--- |
-| MindArmour master | Ubuntu 16.04 or later x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master <br> - For details about other dependency items, see [setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py). | Same as the executable file installation dependencies. |
+| MindArmour master | Ubuntu 18.04 x86_64 | - [Python](https://www.python.org/downloads/) 3.7.5 <br> - MindSpore master <br> - For details about other dependency items, see [setup.py](https://gitee.com/mindspore/mindarmour/blob/master/setup.py). | Same as the executable file installation dependencies. |
 
 - When the network is connected, dependency items in the `setup.py` file are automatically downloaded during .whl package installation. In other cases, you need to manually install dependency items.