diff --git a/tests/examples/C#/taosdemo/README.md b/tests/examples/C#/taosdemo/README.md
new file mode 100644
index 0000000000..5ac063a7ee
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+++ b/tests/examples/C#/taosdemo/README.md
@@ -0,0 +1,11 @@
+install build environment
+===
+yum/apt install mono-complete
+
+build C# version taosdemo
+===
+mcs -out:taosdemo *.cs
+
+run C# version taosdemo
+===
+mono taosdemo [OPTION..]