diff --git a/README.md b/README.md
index 1bfccb32b..718234363 100644
--- a/README.md
+++ b/README.md
@@ -60,10 +60,10 @@ pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{
 ```
 
 Please replace ``{cu_version}`` and ``{torch_version}`` in the url to your desired one. For example,
-to install the latest ``mmcv-full`` with ``CUDA 11`` and ``PyTorch 1.7.0``, use the following command:
+to install the latest ``mmcv-full`` with ``CUDA 11.1`` and ``PyTorch 1.9.0``, use the following command:
 
 ```shell
-pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html
+pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
 ```
 
 For more details, please refer the the following tables and delete ``=={mmcv_version}``.
@@ -76,12 +76,12 @@ The rule for installing a specified ``mmcv-full`` is as follows:
 pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html
 ```
 
-First of all, please refer to the Releases and replace ``{mmcv_version}`` a specified one. e.g. ``1.2.2``.
+First of all, please refer to the Releases and replace ``{mmcv_version}`` a specified one. e.g. ``1.3.9``.
 Then replace ``{cu_version}`` and ``{torch_version}`` in the url to your desired versions. For example,
-to install ``mmcv-full==1.2.2`` with ``CUDA 11`` and ``PyTorch 1.7.0``, use the following command:
+to install ``mmcv-full==1.3.9`` with ``CUDA 11.1`` and ``PyTorch 1.9.0``, use the following command:
 
 ```shell
-pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html
+pip install mmcv-full==1.3.9 -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
 ```
 
 For more details, please refer the the following tables.
@@ -90,6 +90,7 @@ For more details, please refer the the following tables.
   <tbody>
     <tr>
       <th width="80"> CUDA </th>
+      <th valign="bottom" align="left" width="100">torch 1.9</th>
       <th valign="bottom" align="left" width="100">torch 1.8</th>
       <th valign="bottom" align="left" width="100">torch 1.7</th>
       <th valign="bottom" align="left" width="100">torch 1.6</th>
@@ -99,6 +100,7 @@ For more details, please refer the the following tables.
     </tr>
     <tr>
       <td align="left">11.1</td>
+      <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"> </td>
       <td align="left"> </td>
@@ -109,6 +111,7 @@ For more details, please refer the the following tables.
     <tr>
       <td align="left">11.0</td>
       <td align="left"> </td>
+      <td align="left"> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"> </td>
       <td align="left"> </td>
@@ -117,6 +120,7 @@ For more details, please refer the the following tables.
     </tr>
     <tr>
       <td align="left">10.2</td>
+      <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.9.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.6.0/index.html</code></pre> </details> </td>
@@ -126,6 +130,7 @@ For more details, please refer the the following tables.
     </tr>
     <tr>
       <td align="left">10.1</td>
+      <td align="left"> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.6.0/index.html</code></pre> </details> </td>
@@ -136,6 +141,7 @@ For more details, please refer the the following tables.
     <tr>
       <td align="left">9.2</td>
       <td align="left"> </td>
+      <td align="left"> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.6.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.5.0/index.html</code></pre> </details> </td>
@@ -145,6 +151,7 @@ For more details, please refer the the following tables.
     <tr>
       <td align="left">cpu</td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.6.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.5.0/index.html</code></pre> </details> </td>
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 376901147..b61c40100 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -58,10 +58,10 @@ i. 安装最新版本
 pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html
 ```
 
-请将链接中的 ``{cu_version}`` 和 ``{torch_version}`` 根据自身需求替换成实际的版本号，例如想安装和 ``CUDA 11``、``PyTorch 1.7.0`` 兼容的最新版 ``mmcv-full``，使用如下替换过的命令
+请将链接中的 ``{cu_version}`` 和 ``{torch_version}`` 根据自身需求替换成实际的版本号，例如想安装和 ``CUDA 11.1``、``PyTorch 1.9.0`` 兼容的最新版 ``mmcv-full``，使用如下替换过的命令
 
 ```shell
-pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html
+pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
 ```
 
 如果想知道更多 CUDA 和 PyTorch 版本的命令，可以参考下面的表格，将链接中的 ``=={mmcv_version}`` 删去即可。
@@ -74,11 +74,11 @@ ii. 安装特定的版本
 pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html
 ```
 
-首先请参考版本发布信息找到想要安装的版本号，将 ``{mmcv_version}`` 替换成该版本号，例如 ``1.2.2``。
-然后将链接中的 ``{cu_version}`` 和 ``{torch_version}`` 根据自身需求替换成实际的版本号，例如想安装和 ``CUDA 11``、``PyTorch 1.7.0`` 兼容的 ``mmcv-full`` 1.2.2 版本，使用如下替换过的命令
+首先请参考版本发布信息找到想要安装的版本号，将 ``{mmcv_version}`` 替换成该版本号，例如 ``1.3.9``。
+然后将链接中的 ``{cu_version}`` 和 ``{torch_version}`` 根据自身需求替换成实际的版本号，例如想安装和 ``CUDA 11.1``、``PyTorch 1.9.0`` 兼容的 ``mmcv-full`` 1.3.9 版本，使用如下替换过的命令
 
 ```shell
-pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html
+pip install mmcv-full==1.3.9 -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
 ```
 
 对于更多的 PyTorch 和 CUDA 版本组合，请参考下表：
@@ -87,6 +87,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
   <tbody>
     <tr>
       <th width="80"> CUDA </th>
+      <th valign="bottom" align="left" width="100">torch 1.9</th>
       <th valign="bottom" align="left" width="100">torch 1.8</th>
       <th valign="bottom" align="left" width="100">torch 1.7</th>
       <th valign="bottom" align="left" width="100">torch 1.6</th>
@@ -96,6 +97,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
     </tr>
     <tr>
       <td align="left">11.1</td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"> </td>
       <td align="left"> </td>
@@ -106,6 +108,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
     <tr>
       <td align="left">11.0</td>
       <td align="left"> </td>
+      <td align="left"> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"> </td>
       <td align="left"> </td>
@@ -114,6 +117,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
     </tr>
     <tr>
       <td align="left">10.2</td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.9.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.6.0/index.html</code></pre> </details> </td>
@@ -123,6 +127,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
     </tr>
     <tr>
       <td align="left">10.1</td>
+      <td align="left"> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.6.0/index.html</code></pre> </details> </td>
@@ -133,6 +138,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
     <tr>
       <td align="left">9.2</td>
       <td align="left"> </td>
+      <td align="left"> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.6.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.5.0/index.html</code></pre> </details> </td>
@@ -141,6 +147,7 @@ pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/t
     </tr>
     <tr>
       <td align="left">cpu</td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
        <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.6.0/index.html</code></pre> </details> </td>
diff --git a/docs/get_started/installation.md b/docs/get_started/installation.md
index 115270eda..f949ed965 100644
--- a/docs/get_started/installation.md
+++ b/docs/get_started/installation.md
@@ -22,10 +22,10 @@ pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{
 ```
 
 Please replace ``{cu_version}`` and ``{torch_version}`` in the url to your desired one. For example,
-to install the latest ``mmcv-full`` with ``CUDA 11`` and ``PyTorch 1.7.0``, use the following command:
+to install the latest ``mmcv-full`` with ``CUDA 11.1`` and ``PyTorch 1.9.0``, use the following command:
 
 ```shell
-pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html
+pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
 ```
 
 For more details, please refer the the following tables and delete ``=={mmcv_version}``.
@@ -38,12 +38,12 @@ The rule for installing a specified ``mmcv-full`` is as follows:
 pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html
 ```
 
-First of all, please refer to the Releases and replace ``{mmcv_version}`` a specified one. e.g. ``1.2.2``.
+First of all, please refer to the Releases and replace ``{mmcv_version}`` a specified one. e.g. ``1.3.9``.
 Then replace ``{cu_version}`` and ``{torch_version}`` in the url to your desired versions. For example,
-to install ``mmcv-full==1.2.2`` with ``CUDA 11`` and ``PyTorch 1.7.0``, use the following command:
+to install ``mmcv-full==1.3.9`` with ``CUDA 11.1`` and ``PyTorch 1.9.0``, use the following command:
 
 ```shell
-pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html
+pip install mmcv-full==1.3.9 -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
 ```
 
 For more details, please refer the the following tables.
@@ -52,6 +52,7 @@ For more details, please refer the the following tables.
   <tbody>
     <tr>
       <th width="80"> CUDA </th>
+      <th valign="bottom" align="left" width="100">torch 1.9</th>
       <th valign="bottom" align="left" width="100">torch 1.8</th>
       <th valign="bottom" align="left" width="100">torch 1.7</th>
       <th valign="bottom" align="left" width="100">torch 1.6</th>
@@ -61,6 +62,7 @@ For more details, please refer the the following tables.
     </tr>
     <tr>
       <td align="left">11.1</td>
+      <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"> </td>
       <td align="left"> </td>
@@ -71,6 +73,7 @@ For more details, please refer the the following tables.
     <tr>
       <td align="left">11.0</td>
       <td align="left"> </td>
+      <td align="left"> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"> </td>
       <td align="left"> </td>
@@ -79,6 +82,7 @@ For more details, please refer the the following tables.
     </tr>
     <tr>
       <td align="left">10.2</td>
+      <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.9.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.6.0/index.html</code></pre> </details> </td>
@@ -88,6 +92,7 @@ For more details, please refer the the following tables.
     </tr>
     <tr>
       <td align="left">10.1</td>
+      <td align="left"> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.6.0/index.html</code></pre> </details> </td>
@@ -98,6 +103,7 @@ For more details, please refer the the following tables.
     <tr>
       <td align="left">9.2</td>
       <td align="left"> </td>
+      <td align="left"> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.6.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.5.0/index.html</code></pre> </details> </td>
@@ -107,6 +113,7 @@ For more details, please refer the the following tables.
     <tr>
       <td align="left">cpu</td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.7.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.6.0/index.html</code></pre> </details> </td>
       <td align="left"><details><summary> install </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.5.0/index.html</code></pre> </details> </td>
@@ -132,6 +139,6 @@ pip install mmcv
 
 c. Install full version with custom operators for onnxruntime
 
-- Check [here](docs/onnxruntime_op.md) for detailed instruction.
+- Check [here](https://mmcv.readthedocs.io/en/latest/deployment/onnxruntime_custom_ops.html) for detailed instruction.
 
-If you would like to build MMCV from source, please refer to the [guide](build.md).
+If you would like to build MMCV from source, please refer to the [guide](https://mmcv.readthedocs.io/en/latest/get_started/build.html).
diff --git a/docs_zh_CN/get_started/installation.md b/docs_zh_CN/get_started/installation.md
index c9370ded8..7b0e92e6c 100644
--- a/docs_zh_CN/get_started/installation.md
+++ b/docs_zh_CN/get_started/installation.md
@@ -1,3 +1,142 @@
 ## 安装 MMCV
 
-欢迎有兴趣的朋友一起翻译 MMCV 文档。如有兴趣，请在 [MMCV issue](https://github.com/open-mmlab/mmcv/issues) 提 issue 确定翻译的文档。
+MMCV 有两个版本：
+
+- **mmcv-full**: 完整版，包含所有的特性以及丰富的开箱即用的 CUDA 算子。注意完整版本可能需要更长时间来编译。
+- **mmcv**: 精简版，不包含 CUDA 算子但包含其余所有特性和功能，类似 MMCV 1.0 之前的版本。如果你不需要使用 CUDA 算子的话，精简版可以作为一个考虑选项。
+
+**注意**: 请不要在同一个环境中安装两个版本，否则可能会遇到类似 `ModuleNotFound` 的错误。在安装一个版本之前，需要先卸载另一个。`如果CUDA可用，强烈推荐安装mmcv-full`。
+
+a. 安装完整版
+
+在安装 mmcv-full 之前，请确保 PyTorch 已经成功安装在环境中，可以参考 PyTorch 官方[文档](https://pytorch.org/)。
+
+我们提供了不同 PyTorch 和 CUDA 版本的 mmcv-full 预编译包，可以大大简化用户安装编译过程。强烈推荐通过预编译包来安装。
+
+i. 安装最新版本
+
+如下是安装最新版 ``mmcv-full`` 的命令
+
+```shell
+pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html
+```
+
+请将链接中的 ``{cu_version}`` 和 ``{torch_version}`` 根据自身需求替换成实际的版本号，例如想安装和 ``CUDA 11.1``、``PyTorch 1.9.0`` 兼容的最新版 ``mmcv-full``，使用如下替换过的命令
+
+```shell
+pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
+```
+
+如果想知道更多 CUDA 和 PyTorch 版本的命令，可以参考下面的表格，将链接中的 ``=={mmcv_version}`` 删去即可。
+
+ii. 安装特定的版本
+
+如下是安装特定版本 ``mmcv-full`` 的命令
+
+```shell
+pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/{cu_version}/{torch_version}/index.html
+```
+
+首先请参考版本发布信息找到想要安装的版本号，将 ``{mmcv_version}`` 替换成该版本号，例如 ``1.3.9``。
+然后将链接中的 ``{cu_version}`` 和 ``{torch_version}`` 根据自身需求替换成实际的版本号，例如想安装和 ``CUDA 11.1``、``PyTorch 1.9.0`` 兼容的 ``mmcv-full`` 1.3.9 版本，使用如下替换过的命令
+
+```shell
+pip install mmcv-full==1.3.9 -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html
+```
+
+对于更多的 PyTorch 和 CUDA 版本组合，请参考下表：
+
+<table class="docutils">
+  <tbody>
+    <tr>
+      <th width="80"> CUDA </th>
+      <th valign="bottom" align="left" width="100">torch 1.9</th>
+      <th valign="bottom" align="left" width="100">torch 1.8</th>
+      <th valign="bottom" align="left" width="100">torch 1.7</th>
+      <th valign="bottom" align="left" width="100">torch 1.6</th>
+      <th valign="bottom" align="left" width="100">torch 1.5</th>
+      <th valign="bottom" align="left" width="100">torch 1.4</th>
+      <th valign="bottom" align="left" width="100">torch 1.3</th>
+    </tr>
+    <tr>
+      <td align="left">11.1</td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.9.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.8.0/index.html</code></pre> </details> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+    </tr>
+    <tr>
+      <td align="left">11.0</td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu110/torch1.7.0/index.html</code></pre> </details> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+    </tr>
+    <tr>
+      <td align="left">10.2</td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.9.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.8.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.7.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.6.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu102/torch1.5.0/index.html</code></pre> </details> </td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+    </tr>
+    <tr>
+      <td align="left">10.1</td>
+      <td align="left"> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.8.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.7.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.6.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.5.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.4.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.3.0/index.html</code></pre> </details> </td>
+    </tr>
+    <tr>
+      <td align="left">9.2</td>
+      <td align="left"> </td>
+      <td align="left"> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.7.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.6.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.5.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.4.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cu92/torch1.3.0/index.html</code></pre> </details> </td>
+    </tr>
+    <tr>
+      <td align="left">cpu</td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
+       <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.7.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.6.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code> pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.5.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.4.0/index.html</code></pre> </details> </td>
+      <td align="left"><details><summary> 安装 </summary><pre><code>pip install mmcv-full=={mmcv_version} -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.3.0/index.html</code></pre> </details> </td>
+    </tr>
+  </tbody>
+</table>
+
+除了使用预编译包之外，另一种方式是在本地进行编译，直接运行下述命令
+
+```python
+pip install mmcv-full
+```
+
+但注意本地编译可能会耗时 10 分钟以上。
+
+b. 安装精简版
+
+```python
+pip install mmcv
+```
+
+c. 安装完整版并且编译 onnxruntime 的自定义算子
+
+- 详细的指南请查看 [这里](https://mmcv.readthedocs.io/zh_CN/latest/deployment/onnxruntime_custom_ops.html)。
+
+如果想从源码编译 MMCV，请参考[该文档](https://mmcv.readthedocs.io/zh_CN/latest/get_started/build.html)。
diff --git a/docs_zh_CN/get_started/introduction.md b/docs_zh_CN/get_started/introduction.md
index ad0768128..d86aafd2e 100644
--- a/docs_zh_CN/get_started/introduction.md
+++ b/docs_zh_CN/get_started/introduction.md
@@ -1,3 +1,36 @@
 ## 介绍 MMCV
 
-欢迎有兴趣的朋友一起翻译 MMCV 文档。如有兴趣，请在 [MMCV issue](https://github.com/open-mmlab/mmcv/issues) 提 issue 确定翻译的文档。
+<div align="center">
+    <img src="https://raw.githubusercontent.com/open-mmlab/mmcv/master/docs/mmcv-logo.png" width="300"/>
+</div>
+
+[![PyPI](https://img.shields.io/pypi/v/mmcv)](https://pypi.org/project/mmcv) [![badge](https://github.com/open-mmlab/mmcv/workflows/build/badge.svg)](https://github.com/open-mmlab/mmcv/actions) [![codecov](https://codecov.io/gh/open-mmlab/mmcv/branch/master/graph/badge.svg)](https://codecov.io/gh/open-mmlab/mmcv) [![license](https://img.shields.io/github/license/open-mmlab/mmcv.svg)](https://github.com/open-mmlab/mmcv/blob/master/LICENSE)
+
+## 简介
+
+MMCV 是一个面向计算机视觉的基础库，它支持了很多开源项目，例如：
+
+- [MMClassification](https://github.com/open-mmlab/mmclassification): OpenMMLab 图像分类工具箱
+- [MMDetection](https://github.com/open-mmlab/mmdetection): OpenMMLab 目标检测工具箱
+- [MMDetection3D](https://github.com/open-mmlab/mmdetection3d): OpenMMLab 新一代通用 3D 目标检测平台
+- [MMSegmentation](https://github.com/open-mmlab/mmsegmentation): OpenMMLab 语义分割工具箱
+- [MMAction2](https://github.com/open-mmlab/mmaction2): OpenMMLab 新一代视频理解工具箱
+- [MMTracking](https://github.com/open-mmlab/mmtracking): OpenMMLab 一体化视频目标感知平台
+- [MMPose](https://github.com/open-mmlab/mmpose): OpenMMLab 姿态估计工具箱
+- [MMEditing](https://github.com/open-mmlab/mmediting): OpenMMLab 图像视频编辑工具箱
+- [MMOCR](https://github.com/open-mmlab/mmocr): OpenMMLab 全流程文字检测识别理解工具包
+- [MMGeneration](https://github.com/open-mmlab/mmgeneration): OpenMMLab 图片视频生成模型工具箱
+
+MMCV 提供了如下众多功能：
+
+- 通用的 IO 接口
+- 图像和视频处理
+- 图像和标注结果可视化
+- 常用小工具（进度条，计时器等）
+- 基于 PyTorch 的通用训练框架
+- 多种 CNN 网络结构
+- 高质量实现的常见 CUDA 算子
+
+如想了解更多特性和使用，请参考[文档](https://mmcv.readthedocs.io/zh_CN/latest)。
+
+提示: MMCV 需要 Python 3.6 以上版本。