diff --git a/README.md b/README.md
index 41629d6df392ec069d6a0660f82ac9d0cb815170..2d84389f78365025bbb579497ba87956bf24313e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 [![Build Status](https://travis-ci.org/taosdata/TDengine.svg?branch=master)](https://travis-ci.org/taosdata/TDengine)
 [![Build status](https://ci.appveyor.com/api/projects/status/kf3pwh2or5afsgl9/branch/master?svg=true)](https://ci.appveyor.com/project/sangshuduo/tdengine-2n8ge/branch/master)
 [![Coverage Status](https://coveralls.io/repos/github/taosdata/TDengine/badge.svg?branch=develop)](https://coveralls.io/github/taosdata/TDengine?branch=develop)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/4201/badge)](https://bestpractices.coreinfrastructure.org/projects/4201)
 
 [![TDengine](TDenginelogo.png)](https://www.taosdata.com)