diff --git a/.gitignore b/.gitignore
index 9b7cffb..6bbdaec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -112,6 +112,7 @@ data
 *.pkl.json
 *.log.json
 work_dirs/
+mmseg/.mim
 
 # Pytorch
 *.pth
diff --git a/MANIFEST.in b/MANIFEST.in
index 54f5b5c..e307d81 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,4 @@
-
 include requirements/*.txt
-include mmseg/model-index.yml
-recursive-include mmseg/configs *.py *.yml
-recursive-include mmseg/tools *.sh *.py
+include mmseg/.mim/model-index.yml
+recursive-include mmseg/.mim/configs *.py *.yml
+recursive-include mmseg/.mim/tools *.py *.sh
diff --git a/README.md b/README.md
index 20e8f93..5526b16 100644
--- a/README.md
+++ b/README.md
@@ -142,3 +142,4 @@ and develop their own new semantic segmentation methods.
 - [MMEditing](https://github.com/open-mmlab/mmediting): OpenMMLab image and video editing toolbox.
 - [MMOCR](https://github.com/open-mmlab/mmocr): A Comprehensive Toolbox for Text Detection, Recognition and Understanding.
 - [MMGeneration](https://github.com/open-mmlab/mmgeneration): A powerful toolkit for generative models.
+- [MIM](https://github.com/open-mmlab/mim): MIM Installs OpenMMLab Packages.
diff --git a/setup.py b/setup.py
index 321664b..92c0950 100755
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,8 @@
+import os
+import os.path as osp
+import shutil
+import sys
+import warnings
 from setuptools import find_packages, setup
 
 
@@ -92,7 +97,56 @@ def parse_requirements(fname='requirements.txt', with_version=True):
     return packages
 
 
+def add_mim_extention():
+    """Add extra files that are required to support MIM into the package.
+
+    These files will be added by creating a symlink to the originals if the
+    package is installed in `editable` mode (e.g. pip install -e .), or by
+    copying from the originals otherwise.
+    """
+
+    # parse installment mode
+    if 'develop' in sys.argv:
+        # installed by `pip install -e .`
+        mode = 'symlink'
+    elif 'sdist' in sys.argv or 'bdist_wheel' in sys.argv:
+        # installed by `pip install .`
+        # or create source distribution by `python setup.py sdist`
+        mode = 'copy'
+    else:
+        return
+
+    filenames = ['tools', 'configs', 'model-index.yml']
+    repo_path = osp.dirname(__file__)
+    mim_path = osp.join(repo_path, 'mmseg', '.mim')
+    os.makedirs(mim_path, exist_ok=True)
+
+    for filename in filenames:
+        if osp.exists(filename):
+            src_path = osp.join(repo_path, filename)
+            tar_path = osp.join(mim_path, filename)
+
+            if osp.isfile(tar_path) or osp.islink(tar_path):
+                os.remove(tar_path)
+            elif osp.isdir(tar_path):
+                shutil.rmtree(tar_path)
+
+            if mode == 'symlink':
+                src_relpath = osp.relpath(src_path, osp.dirname(tar_path))
+                os.symlink(src_relpath, tar_path)
+            elif mode == 'copy':
+                if osp.isfile(src_path):
+                    shutil.copyfile(src_path, tar_path)
+                elif osp.isdir(src_path):
+                    shutil.copytree(src_path, tar_path)
+                else:
+                    warnings.warn(f'Cannot copy file {src_path}.')
+            else:
+                raise ValueError(f'Invalid mode {mode}')
+
+
 if __name__ == '__main__':
+    add_mim_extention()
     setup(
         name='mmsegmentation',
         version=get_version(),