diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,19 +1,52 @@
-# AsmdefGraph
-unity assembly definition viewer
+# Asmdef Helper
+Unity assembly definition utilities.
-# How to use
+This library solve inconvenience of assembly definition on unity.
-[Window] > [Open Asemdef Graph Window]
+## Dependency Graph
-
+Unity assembly definition viewer.
+
+[Window] > [Asmdef Helper] > [Open DependencyGraph]
+
+
Show assembly definition referances in your project like this.
-
-
+
You need to organize the nodes by yourself.
+## Multiple Edit
+
+Open multiple assembly definition inspector views for parallel editing.
+
+1. [Window] > [Asmdef Helper] > [Find all asmdef in project]
+2. All asmdef will appear in project browser.
+3. Pick up asmdef to edit.
+4. [Window] > [Asmdef Helper] > [Open selected asmdef inspector view]
+5. Open asmdef inspector views and edit asmdef.
+
+
+
+## Sync Solution
+
+Refresh .sln/.csproj in your project.
+
+[Window] > [Asmdef Helper] > [Sync C# Solution]
+
+I referred to this: [[SOLVED] Unity not generating .sln file from Assets > Open C# Project
+](https://forum.unity.com/threads/solved-unity-not-generating-sln-file-from-assets-open-c-project.538487/)
+
+___
+
+## Environment
+Unity 2019.3.4f1
+
+This library use unity internal class, so may be not work (or couse build error) depending your unity vresion.
+
+I referred to this: [【Unity, C#】internalな型やメンバにアクセスするには、多分これが一番早いと思います](https://qiita.com/mob-sakai/items/f3bbc0c45abc31ea7ac0)
+
## License
MIT