diff --git a/src/mock/d2-mock/patch/withCredentials.js b/src/mock/d2-mock/patch/withCredentials.js
index 71a65a32..085a9145 100644
--- a/src/mock/d2-mock/patch/withCredentials.js
+++ b/src/mock/d2-mock/patch/withCredentials.js
@@ -2,7 +2,10 @@ export default function (Mock) {
   // http://cnine.me/note/FrontEnd/mock-lose-cookies-dbg.html
   Mock.XHR.prototype.__send = Mock.XHR.prototype.send
   Mock.XHR.prototype.send = function () {
-    if (this.custom.xhr) this.custom.xhr.withCredentials = this.withCredentials || false
+    if (this.custom.xhr) {
+      this.custom.xhr.withCredentials = this.withCredentials || false
+      this.custom.xhr.responseType = this.responseType
+    }
     this.__send.apply(this, arguments)
   }
 }