diff --git a/README.md b/README.md
index a6a2dc723..97ac88906 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,11 @@ simple-rtmp-server
 ==================
 
 simple rtmp origin/edge live server over state-threads.
+
+1. simple: also stable enough.
+2. high-performance: single-thread, async socket, event/st-thread driven.
+3. support origin and edge mode.
+4. only for live streaming.
+5. support vhost.
+
+Winlin