diff --git a/src/service/wechatwork.service.ts b/src/service/wechatwork.service.ts
index 3a59875..bac2928 100644
--- a/src/service/wechatwork.service.ts
+++ b/src/service/wechatwork.service.ts
@@ -1,7 +1,7 @@
 import axios, { AxiosRequestConfig } from 'axios'
 import { singleton } from 'decorators/singleton'
+import fs from 'fs'
 
-const fs = require('fs')
 const WX_API_HOST = 'https://qyapi.weixin.qq.com'
 @singleton
 export class WechatWorkService {
@@ -25,10 +25,8 @@ export class WechatWorkService {
    */
   public async refreshAccessToken() {
     const url = `${WX_API_HOST}/cgi-bin/gettoken`
-    // use axios get url
     let config: AxiosRequestConfig = {
       method: 'get',
-      maxBodyLength: Infinity,
       url,
       params: {
         corpid: this.wxCorpId,
@@ -38,6 +36,11 @@ export class WechatWorkService {
     let response = await axios.request(config).then(response => {
       return response.data
     })
+    if (response.errcode) {
+      throw new Error(response.errmsg)
+    }
+    this.accessToken = response.access_token
+    this.tokenExpire = Date.now() + response.expires_in * 1000
   }
   /**
    * 获取审批申请详情