diff --git a/src/pages/editor/SourceBox.js b/src/pages/editor/SourceBox.js
index 4d7d39f..4f86b4e 100644
--- a/src/pages/editor/SourceBox.js
+++ b/src/pages/editor/SourceBox.js
@@ -69,9 +69,12 @@ const SourceBox = memo(props => {
   }, [canvasId]);
 
   useEffect(() => {
-    setTimeout(() => {
+    let timer = window.setTimeout(() => {
       setIsShowTip(false);
     }, 3000);
+    return () => {
+      window.clearTimeout(timer);
+    };
   }, []);
 
   const opacity = isOver ? 0.7 : 1;
diff --git a/src/pages/editor/preview.js b/src/pages/editor/preview.js
index 7c23155..4d496c8 100644
--- a/src/pages/editor/preview.js
+++ b/src/pages/editor/preview.js
@@ -38,7 +38,7 @@ const PreviewPage = memo(props => {
 
   useEffect(() => {
     const { tid } = props.location.query;
-    const timer = null;
+    let timer = null;
     req
       .get('/visible/preview/get', { params: { tid } })
       .then(res => {
@@ -55,7 +55,7 @@ const PreviewPage = memo(props => {
         }, 3000);
       });
     return () => {
-      clearTimeout(timer);
+      window.clearTimeout(timer);
     };
   }, []);
 
diff --git a/src/utils/req.ts b/src/utils/req.ts
index 0c268a2..a8fd997 100644
--- a/src/utils/req.ts
+++ b/src/utils/req.ts
@@ -1,50 +1,57 @@
-import axios from 'axios'
-import { message } from 'antd'
+import axios from 'axios';
+import { message } from 'antd';
 
-const isDev = process.env.NODE_ENV === 'development'
+const isDev = process.env.NODE_ENV === 'development';
 
 const instance = axios.create({
-    // 服务器地址需要自己配置和开发
-    baseURL: isDev ? 'http://localhost:3000/xxx' : 'http://xxxxx',
-    timeout: 10000,
-    withCredentials: true
+  // 服务器地址需要自己配置和开发
+  baseURL: isDev ? 'http://localhost:3000/xxx' : 'http://xxxxx',
+  timeout: 10000,
+  withCredentials: true,
 });
 
 // 添加请求拦截器
-instance.interceptors.request.use(function (config) {
+instance.interceptors.request.use(
+  function(config) {
     // 在发送请求之前做些什么
     config.headers = {
-        'x-requested-with': localStorage.getItem('user') || '',
-        'authorization': localStorage.getItem('token') || ''
-    }
+      'x-requested-with': localStorage.getItem('user') || '',
+      authorization: localStorage.getItem('token') || '',
+    };
     return config;
-  }, function (error) {
+  },
+  function(error) {
     // 对请求错误做些什么
     return Promise.reject(error);
-  });
+  },
+);
 
 // 添加响应拦截器
-instance.interceptors.response.use(function (response) {
+instance.interceptors.response.use(
+  function(response) {
     // 对响应数据做点什么
-    if(response.headers['x-show-msg'] === 'zxzk_msg_200') {
-        message.success(response.data.msg);
+    if (response.headers['x-show-msg'] === 'zxzk_msg_200') {
+      message.success(response.data.msg);
     }
     return response.data.result;
-  }, function (error) {
+  },
+  function(error) {
     // 对响应错误做点什么
     const { response } = error;
-    if(response.status === 404) {
+    if (response) {
+      if (response.status === 404) {
         message.error('请求资源未发现');
-    }else if(response.status === 403) {
+      } else if (response.status === 403) {
         message.error(response.data.msg, () => {
-            window.location.href = '/admin/login'
+          window.location.href = '/admin/login';
         });
-    }else {
+      } else {
         message.error(response.data.msg);
+      }
     }
+
     return Promise.reject(error);
-  });
+  },
+);
 
-
-
-export default instance
\ No newline at end of file
+export default instance;