diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..15abd6b4
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,7 @@
+*.png filter=lfs diff=lfs merge=lfs -text
+*.jpg filter=lfs diff=lfs merge=lfs -text
+*.mp4 filter=lfs diff=lfs merge=lfs -text
+*.wav filter=lfs diff=lfs merge=lfs -text
+*.JPEG filter=lfs diff=lfs merge=lfs -text
+*.jpeg filter=lfs diff=lfs merge=lfs -text
+*.pth filter=lfs diff=lfs merge=lfs -text
diff --git a/data/test/segmentation/data/000000309022.jpg b/data/test/segmentation/data/000000309022.jpg
new file mode 100755
index 00000000..7aa51424
--- /dev/null
+++ b/data/test/segmentation/data/000000309022.jpg
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:898b141c663f242f716bb26c4cf4962452927e6bef3f170e61fb364cd6359d00
+size 187956
diff --git a/data/test/segmentation/models/segformer_b0.pth b/data/test/segmentation/models/segformer_b0.pth
new file mode 100644
index 00000000..85e68166
--- /dev/null
+++ b/data/test/segmentation/models/segformer_b0.pth
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:94d7df6a4ff3c605916378304b2a00404a23d4965d226a657417061647cb46a6
+size 45361179
diff --git a/docs/source/develop.md b/docs/source/develop.md
index 705e23f8..7273c16c 100644
--- a/docs/source/develop.md
+++ b/docs/source/develop.md
@@ -39,12 +39,55 @@ pre-commit run --all-files
 bash scripts/ci_test.sh
  ```
 
- ### 2.2 Test data
- if you add new data, please do the following to commit it to git-lfs before "git commit":
- ```bash
- python git-lfs/git_lfs.py add data/test/new_data
- python git-lfs/git_lfs.py push
- ```
+
+### 2.2 Test data storage
+
+As we need a lot of data for testing, including images, models. We use git lfs
+to store those large files.
+
+1. install git-lfs(version>=2.5.0)
+
+for mac
+
+```bash
+brew install git-lfs
+git lfs install
+```
+
+for centos, please download rpm from git-lfs github release [website](https://github.com/git-lfs/git-lfs/releases/tag/v3.2.0)
+```bash
+wget http://101374-public.oss-cn-hangzhou-zmf.aliyuncs.com/git-lfs-3.2.0-1.el7.x86_64.rpm
+sudo rpm -ivh git-lfs-3.2.0-1.el7.x86_64.rpm
+git lfs install
+```
+
+for ubuntu
+```bash
+curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
+sudo apt-get install git-lfs
+git lfs install
+```
+
+2. track your data type using git lfs, for example, to track png files
+```bash
+git lfs track "*.png"
+```
+
+3. add your test files to `data/test/` folder, you can make directories if you need.
+```bash
+git add data/test/test.png
+```
+
+4. commit your test data to remote branch
+```bash
+git commit -m "xxx"
+```
+
+To pull data from remote repo, just as the same way you pull git files.
+```bash
+git pull origin branch_name
+```
+
 
  ## 3. Build pip package
  ```bash