diff --git a/index.js b/index.js
index f286f53..4b1fe2c 100644
--- a/index.js
+++ b/index.js
@@ -62,7 +62,7 @@ module.exports = {
   makeServerUrl(route = '') {
     if (typeof route !== 'string') route = '' // 防止 route 为 null, undefined 等由于后台数据库默认值而造成的异常。
 
-    route.replace('\\', '/')
+    route = route.replace('\\', '/')
     if (/^https?:\/\//.test(route)) {
       return route
     }