diff --git a/README.md b/README.md
index dc049ed..f5c4c2f 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # switch
-Virtual Network Tools
+ A virtual network tool (VPN)
 
 将不同网络下的多个设备虚拟到一个局域网下