diff --git a/src/mock/index.js b/src/mock/index.js
index e6644ae1590fbfe5489e2dcf7af724bc3ef2a132..3e00e91838db0aaa4da8fae49fad6579a9f1c3a4 100644
--- a/src/mock/index.js
+++ b/src/mock/index.js
@@ -4,6 +4,16 @@ import articleAPI from './article'
 import remoteSearchAPI from './remoteSearch'
 import transactionAPI from './transaction'
 
+// 修复在使用 MockJS 情况下，设置 withCredentials = true，且未被拦截的跨域请求丢失 Cookies 的问题
+// https://github.com/nuysoft/Mock/issues/300
+Mock.XHR.prototype.proxy_send = Mock.XHR.prototype.send
+Mock.XHR.prototype.send = function() {
+  if (this.custom.xhr) {
+    this.custom.xhr.withCredentials = this.withCredentials || false
+  }
+  this.proxy_send(...arguments)
+}
+
 // Mock.setup({
 //   timeout: '350-600'
 // })