diff --git a/fir_ser/nginx-vhost.conf b/fir_ser/nginx-vhost.conf
index 4638484..a1c03cd 100644
--- a/fir_ser/nginx-vhost.conf
+++ b/fir_ser/nginx-vhost.conf
@@ -34,8 +34,9 @@ server
 #        root  /data/flyapp/fir_ser/;
 #        rewrite ^/download/(.*) /files/$1 break;
 #    }
-
-
+    # 如果使用cdn,需要配置该选项
+    set_real_ip_from 0.0.0.0/0;
+    real_ip_header X-Forwarded-For;
 
     location ~ ^/(download|api|files|udid|captcha) {
         #proxy_pass http://synchrotron;