diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # EhViewer
 
+[![CodeFactor](https://www.codefactor.io/repository/github/asuka-mio/ehviewer/badge)](https://www.codefactor.io/repository/github/asuka-mio/ehviewer)
 ![Icon](art/launcher_icon-web.png)
 
 这是一个 E-Hentai Android 平台的浏览器