diff --git a/php/blackbin/v1/readme.md b/php/blackbin/v1/readme.md
index 6414e8d..794d726 100644
--- a/php/blackbin/v1/readme.md
+++ b/php/blackbin/v1/readme.md
@@ -1,3 +1,10 @@
 look here:
 
-http://blog.wangzhan.360.cn/?p=65
\ No newline at end of file
+http://blog.wangzhan.360.cn/?p=65
+
+
+demo :
+
+first you open webshell  is  "404", then enter "p", after show login page
+
+pass: demo123456
\ No newline at end of file