diff --git a/README.md b/README.md
index 24354c7a91..82fc792379 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,21 @@ The master branch works with **PyTorch 1.3+**.
 
 ## Installation
 
-Please refer to [install.md](docs/install.md) for installation.
+MMAction2 depends on [PyTorch](https://pytorch.org/)], [MMCV](https://github.com/open-mmlab/mmcv), [MMDetection](https://github.com/open-mmlab/mmdetection) (optional), and [MMPose](https://github.com/open-mmlab/mmdetection)(optional).
+Below are quick steps for installation.
+Please refer to [install.md](docs/install.md) for more detailed instruction.
+
+```shell
+conda create -n open-mmlab python=3.8 pytorch=1.10 cudatoolkit=11.3 torchvision -c pytorch -y
+conda activate open-mmlab
+pip3 install openmim
+mim install mmcv-full
+mim install mmdet  # optional
+mim install mmpose  # optional
+git clone https://github.com/open-mmlab/mmaction2.git
+cd mmaction2
+pip3 install -e .
+```
 
 ## Get Started
 
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 83b4bfdce2..243eddc52f 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -82,7 +82,20 @@ v0.22.0 版本已于 2022 年 3 月 5 日发布，可通过查阅 [更新日志]
 
 ## 安装
 
-请参考 [安装指南](/docs_zh_CN/install.md) 进行安装
+MMAction2 依赖 [PyTorch](https://pytorch.org/)], [MMCV](https://github.com/open-mmlab/mmcv), [MMDetection](https://github.com/open-mmlab/mmdetection)(可选), [MMPose](https://github.com/open-mmlab/mmpose)(可选)，以下是安装的简要步骤。
+更详细的安装指南请参考 [install.md](docs_zh_CN/install.md)。
+
+```shell
+conda create -n open-mmlab python=3.8 pytorch=1.10 cudatoolkit=11.3 torchvision -c pytorch -y
+conda activate open-mmlab
+pip3 install openmim
+mim install mmcv-full
+mim install mmdet  # 可选
+mim install mmpose  # 可选
+git clone https://github.com/open-mmlab/mmaction2.git
+cd mmaction2
+pip3 install -e .
+```
 
 ## 教程
 
diff --git a/docs/getting_started.md b/docs/getting_started.md
index 66a7e46663..fef4b05e4a 100644
--- a/docs/getting_started.md
+++ b/docs/getting_started.md
@@ -72,12 +72,12 @@ You can use the following commands to test a dataset.
 # single-gpu testing
 python tools/test.py ${CONFIG_FILE} ${CHECKPOINT_FILE} [--out ${RESULT_FILE}] [--eval ${EVAL_METRICS}] \
     [--gpu-collect] [--tmpdir ${TMPDIR}] [--options ${OPTIONS}] [--average-clips ${AVG_TYPE}] \
-    [--launcher ${JOB_LAUNCHER}] [--local-rank ${LOCAL_RANK}] [--onnx] [--tensorrt]
+    [--launcher ${JOB_LAUNCHER}] [--local_rank ${LOCAL_RANK}] [--onnx] [--tensorrt]
 
 # multi-gpu testing
 ./tools/dist_test.sh ${CONFIG_FILE} ${CHECKPOINT_FILE} ${GPU_NUM} [--out ${RESULT_FILE}] [--eval ${EVAL_METRICS}] \
     [--gpu-collect] [--tmpdir ${TMPDIR}] [--options ${OPTIONS}] [--average-clips ${AVG_TYPE}] \
-    [--launcher ${JOB_LAUNCHER}] [--local-rank ${LOCAL_RANK}]
+    [--launcher ${JOB_LAUNCHER}] [--local_rank ${LOCAL_RANK}]
 ```
 
 Optional arguments:
diff --git a/docs_zh_CN/getting_started.md b/docs_zh_CN/getting_started.md
index 577e0cad88..9da0aa8065 100644
--- a/docs_zh_CN/getting_started.md
+++ b/docs_zh_CN/getting_started.md
@@ -71,12 +71,12 @@ MMAction2 支持仅使用 CPU 进行测试。然而，这样做的速度**非常
 # 单 GPU 测试
 python tools/test.py ${CONFIG_FILE} ${CHECKPOINT_FILE} [--out ${RESULT_FILE}] [--eval ${EVAL_METRICS}] \
     [--gpu-collect] [--tmpdir ${TMPDIR}] [--options ${OPTIONS}] [--average-clips ${AVG_TYPE}] \
-    [--launcher ${JOB_LAUNCHER}] [--local-rank ${LOCAL_RANK}] [--onnx] [--tensorrt]
+    [--launcher ${JOB_LAUNCHER}] [--local_rank ${LOCAL_RANK}] [--onnx] [--tensorrt]
 
 # 多 GPU 测试
 ./tools/dist_test.sh ${CONFIG_FILE} ${CHECKPOINT_FILE} ${GPU_NUM} [--out ${RESULT_FILE}] [--eval ${EVAL_METRICS}] \
     [--gpu-collect] [--tmpdir ${TMPDIR}] [--options ${OPTIONS}] [--average-clips ${AVG_TYPE}] \
-    [--launcher ${JOB_LAUNCHER}] [--local-rank ${LOCAL_RANK}]
+    [--launcher ${JOB_LAUNCHER}] [--local_rank ${LOCAL_RANK}]
 ```
 
 可选参数:
diff --git a/tools/misc/clip_feature_extraction.py b/tools/misc/clip_feature_extraction.py
index a6e37b3c3a..1829bf9b5c 100644
--- a/tools/misc/clip_feature_extraction.py
+++ b/tools/misc/clip_feature_extraction.py
@@ -59,7 +59,7 @@ def parse_args():
         choices=['none', 'pytorch', 'slurm', 'mpi'],
         default='none',
         help='job launcher')
-    parser.add_argument('--local-rank', type=int, default=0)
+    parser.add_argument('--local_rank', type=int, default=0)
     args = parser.parse_args()
     if 'LOCAL_RANK' not in os.environ:
         os.environ['LOCAL_RANK'] = str(args.local_rank)
diff --git a/tools/test.py b/tools/test.py
index 9152c90917..31514498cf 100644
--- a/tools/test.py
+++ b/tools/test.py
@@ -89,7 +89,7 @@ def parse_args():
         choices=['none', 'pytorch', 'slurm', 'mpi'],
         default='none',
         help='job launcher')
-    parser.add_argument('--local-rank', type=int, default=0)
+    parser.add_argument('--local_rank', type=int, default=0)
     parser.add_argument(
         '--onnx',
         action='store_true',
diff --git a/tools/train.py b/tools/train.py
index 6461e7030a..d404980464 100644
--- a/tools/train.py
+++ b/tools/train.py
@@ -74,7 +74,7 @@ def parse_args():
         choices=['none', 'pytorch', 'slurm', 'mpi'],
         default='none',
         help='job launcher')
-    parser.add_argument('--local-rank', type=int, default=0)
+    parser.add_argument('--local_rank', type=int, default=0)
     args = parser.parse_args()
     if 'LOCAL_RANK' not in os.environ:
         os.environ['LOCAL_RANK'] = str(args.local_rank)