diff --git a/vhost/demo.conf b/vhost/demo.conf
index 0da8627..bb35996 100644
--- a/vhost/demo.conf
+++ b/vhost/demo.conf
@@ -6,15 +6,26 @@ server {
     root $root_path;
 
 
-    location / {
-        index  index.html index.htm;
-    }
-
 	location /lua {
 		default_type 'text/plain';
         content_by_lua 'ngx.say("hello, ttlsa lua")';
     }
 
+    location / {
+        try_files $uri $uri/ /index.php?$args;
+
+        # add support for img which has query params,
+        # like:  xxx.jpg?a=b&c=d_750x750.jpg
+        if ($args ~* "^([^_]+)_(\d+)+x(\d+)+\.(jpg|jpeg|gif|png)$") {
+            set $w $2;
+            set $h $3;
+            set $img_ext $4;
+
+            # rewrite ^\?(.*)$ _${w}x${h}.$img_ext? last;
+            rewrite ([^.]*).(jpg|jpeg|png|gif)$  $1.$2_${w}x${h}.$img_ext? permanent;
+        }
+    }
+
     # set var for thumb pic
     set $upload_path /opt/uploads;
     set $img_original_root  $upload_path;# original root;
diff --git a/vhost/fdfs.conf b/vhost/fdfs.conf
index d3c7356..1cd8e0a 100644
--- a/vhost/fdfs.conf
+++ b/vhost/fdfs.conf
@@ -37,25 +37,21 @@ server{
     }
 
     location /pic/M00 {
+            # add support for img which has query params,
+            # like:  xxx.jpg?a=b&c=d_750x750.jpg
+            if ($args ~* "^([^_]+)_(\d+)+x(\d+)+\.(jpg|jpeg|gif|png)$"){
+                    set $w $2;
+                    set $h $3;
+                    set $img_ext $4;
+
+                    # rewrite ^\?(.*)$  _${w}x${h}.$img_ext?   last;
+                    rewrite ([^.]*).(jpg|jpeg|png|gif)$  $1.$2_${w}x${h}.$img_ext? permanent;
+            }
+
             alias /opt/fastdfs/pic/store0/data;
             ngx_fastdfs_module;
     }
 
-    location /chat/M00 {
-            alias /opt/fastdfs/chat/store0/data;
-            ngx_fastdfs_module;
-    }
-
-    location /avatar/M00 {
-            alias /opt/fastdfs/avatar/store0/data;
-            ngx_fastdfs_module;
-    }
-
-    location /media/M00 {
-            alias /opt/fastdfs/media/store0/data;
-            ngx_fastdfs_module;
-    }
-
     location = /favicon.ico {
             log_not_found off;
             access_log off;