diff --git a/src/api/HTTP.js b/src/api/HTTP.js
index adb0ae6..3d79f88 100644
--- a/src/api/HTTP.js
+++ b/src/api/HTTP.js
@@ -1,7 +1,7 @@
 import iconv from 'iconv-lite';
 import {Buffer} from 'buffer';
 
-function post(url, data) {
+function gbkFetch(method, url, data) {
   return new Promise(function (resolve, reject) {
     const request = new XMLHttpRequest();
 
@@ -15,7 +15,7 @@ function post(url, data) {
     request.onerror = () => reject(new Error(request.statusText));
     request.responseType = 'arraybuffer';
 
-    request.open('POST', url);
+    request.open(method, url);
     for (let headerKey in data.headers) {
       request.setRequestHeader(headerKey, data.headers[headerKey]);
     }
@@ -23,4 +23,4 @@ function post(url, data) {
   });
 }
 
-export {post};
+export {gbkFetch};
diff --git a/src/component/YooLogin.js b/src/component/YooLogin.js
index c9e3f56..2215df7 100644
--- a/src/component/YooLogin.js
+++ b/src/component/YooLogin.js
@@ -1,7 +1,7 @@
 import React, {Component} from 'react';
 import YooLoginUI from '../ui/YooLoginUI';
 import CookieManager from '@react-native-community/cookies';
-import {post} from '../api/HTTP';
+import {gbkFetch} from '../api/HTTP';
 
 export default class YooLogin extends Component {
   constructor(props) {
@@ -24,7 +24,7 @@ export default class YooLogin extends Component {
   }
 
   login(onFail) {
-    post('http://eol.ctbu.edu.cn/meol/loginCheck.do', {
+    gbkFetch('POST', 'http://eol.ctbu.edu.cn/meol/loginCheck.do', {
       headers: {
         'Cache-Control': 'max-age=0',
         'Upgrade-Insecure-Requests': '1',
diff --git a/src/component/YooSplash.js b/src/component/YooSplash.js
index 094b7af..7f0bee7 100644
--- a/src/component/YooSplash.js
+++ b/src/component/YooSplash.js
@@ -1,12 +1,12 @@
 import React, {Component} from 'react';
 import {ToastAndroid} from 'react-native';
 import YooSplashUI from '../ui/YooSplashUI';
-import {post} from '../api/HTTP';
+import {gbkFetch} from '../api/HTTP';
 import CookieManager from '@react-native-community/cookies';
 
 export default class YooSplash extends Component {
   componentDidMount() {
-    post('http://eol.ctbu.edu.cn/meol/loginCheck.do', {
+    gbkFetch('POST', 'http://eol.ctbu.edu.cn/meol/loginCheck.do', {
       headers: {
         'Cache-Control': 'max-age=0',
         'Upgrade-Insecure-Requests': '1',