diff --git a/packages/ui/src/main/flow/CHECK_AND_DOWNLOAD_DEPENDENCIES/index.ts b/packages/ui/src/main/flow/CHECK_AND_DOWNLOAD_DEPENDENCIES/index.ts
index a5f79ad..0d71968 100644
--- a/packages/ui/src/main/flow/CHECK_AND_DOWNLOAD_DEPENDENCIES/index.ts
+++ b/packages/ui/src/main/flow/CHECK_AND_DOWNLOAD_DEPENDENCIES/index.ts
@@ -2,13 +2,12 @@ import { app } from 'electron'
 import checkAndDownloadPuppeteer from './check-and-download-puppeteer'
 import * as net from 'net'
 
-app.dock.hide()
-
 export enum DOWNLOAD_ERROR_EXIT_CODE {
   NO_ERROR = 0,
   DOWNLOAD_ERROR = 1
 }
 export const checkAndDownloadDependenciesForInit = async () => {
+  app.dock.hide()
   let pipe: null | net.Socket = null
   try {
     pipe = new net.Socket({ fd: 3 })
diff --git a/packages/ui/src/main/flow/GEEK_AUTO_START_CHAT_WITH_BOSS.ts b/packages/ui/src/main/flow/GEEK_AUTO_START_CHAT_WITH_BOSS.ts
index b9b7b55..299163a 100644
--- a/packages/ui/src/main/flow/GEEK_AUTO_START_CHAT_WITH_BOSS.ts
+++ b/packages/ui/src/main/flow/GEEK_AUTO_START_CHAT_WITH_BOSS.ts
@@ -7,8 +7,6 @@ import {
   checkPuppeteerExecutable,
 } from './CHECK_AND_DOWNLOAD_DEPENDENCIES/check-and-download-puppeteer'
 
-app.dock.hide()
-
 const { groupRobotAccessToken: dingTalkAccessToken } = readConfigFile('dingtalk.json')
 
 const initPlugins = (hooks) => {
@@ -16,6 +14,7 @@ const initPlugins = (hooks) => {
 }
 
 export const runAutoChat = async () => {
+  app.dock.hide()
   let pipe: null | net.Socket = null
   try {
     pipe = new net.Socket({ fd: 3 })
diff --git a/packages/ui/src/main/window/mainWindow.ts b/packages/ui/src/main/window/mainWindow.ts
index 296325c..6f5c18d 100644
--- a/packages/ui/src/main/window/mainWindow.ts
+++ b/packages/ui/src/main/window/mainWindow.ts
@@ -15,7 +15,7 @@ import {
 } from '../flow/CHECK_AND_DOWNLOAD_DEPENDENCIES/check-and-download-puppeteer'
 import * as JSONStream from 'JSONStream'
 import { DOWNLOAD_ERROR_EXIT_CODE } from '../flow/CHECK_AND_DOWNLOAD_DEPENDENCIES'
-let mainWindow: BrowserWindow
+let mainWindow: BrowserWindow = null
 
 export function createMainWindow(): void {
   // Create the browser window.
@@ -196,4 +196,8 @@ export function createMainWindow(): void {
       activate: true
     })
   })
+
+  mainWindow!.once('closed', () => {
+    mainWindow = null
+  })
 }