diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,4 +1,16 @@
 ***s***imple ***mu***ltiple***x***ing
+[![GoDoc][1]][2] [![MIT licensed][3]][4] [![Build Status][5]][6] [![Go Report Card][7]][8] [![Coverage Statusd][9]][10]
+
+[1]: https://godoc.org/github.com/xtaci/smux?status.svg
+[2]: https://godoc.org/github.com/xtaci/smux
+[3]: https://img.shields.io/badge/license-MIT-blue.svg
+[4]: LICENSE
+[5]: https://travis-ci.org/xtaci/smux.svg?branch=master
+[6]: https://travis-ci.org/xtaci/smux
+[7]: https://goreportcard.com/badge/github.com/xtaci/smux
+[8]: https://goreportcard.com/report/github.com/xtaci/smux
+[9]: https://codecov.io/gh/xtaci/smux/branch/master/graph/badge.svg
+[10]: https://codecov.io/gh/xtaci/smux
 
 # goals
 1. receive window is shared among the streams.