diff --git a/README.md b/README.md
index a801d35..38cc6b4 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,7 @@
-# testRunLoop1
\ No newline at end of file
+# testRunLoop1
+
+runloop features test as blow:
+* NSRunLoop run
+* NSRunLoop modes 
+* CFRunloop run
+* CFRunLoopSource