diff --git a/README.md b/README.md
index cc035ff..f929476 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,11 @@
 # mmv [![CI Status](https://github.com/itchyny/mmv/workflows/CI/badge.svg)](https://github.com/itchyny/mmv/actions)
 Rename multiple files using your `$EDITOR`. The command name is named after _multi-mv_.
+## Usage
+```bash
+mmv [files] ...
+```
+This command opens the editor with the list of file names so edit and write.
+The command finds the changed lines and renames all the corresponding files.
 
 ## Installation
 ```bash