diff --git a/packages/core/src/config/index.js b/packages/core/src/config/index.js
index 011f18a3c..3805441d5 100644
--- a/packages/core/src/config/index.js
+++ b/packages/core/src/config/index.js
@@ -27,6 +27,7 @@ module.exports = {
       personalUrl: ''
     },
     startShowWindow: true, // 启动时是否打开窗口：true=打开窗口, false=隐藏窗口
+    windowSize: { width: 900, height: 750 }, // 启动时，窗口的尺寸
     theme: 'dark', // 主题：light=亮色, dark=暗色
     autoChecked: true, // 是否自动检查更新
     skipPreRelease: true, // 是否忽略预发布版本
diff --git a/packages/gui/src/background.js b/packages/gui/src/background.js
index 88ee458c2..6a09f0813 100644
--- a/packages/gui/src/background.js
+++ b/packages/gui/src/background.js
@@ -136,10 +136,10 @@ function changeAppConfig (config) {
 
 function createWindow (startHideWindow) {
   // Create the browser window.
-
+  const windowSize = DevSidecar.api.config.get().app.windowSize || {}
   win = new BrowserWindow({
-    width: 900,
-    height: 750,
+    width: windowSize.width || 900,
+    height: windowSize.height || 750,
     title: 'DevSidecar',
     webPreferences: {
       enableRemoteModule: true,
diff --git a/packages/gui/src/view/pages/setting.vue b/packages/gui/src/view/pages/setting.vue
index 33cba2876..f42511586 100644
--- a/packages/gui/src/view/pages/setting.vue
+++ b/packages/gui/src/view/pages/setting.vue
@@ -101,6 +101,10 @@
           启动软件时，是否打开窗口。提示：如果设置为隐藏窗口，可点击系统托盘小图标打开窗口。
         </div>
       </a-form-item>
+      <a-form-item label="启动时窗口大小" :label-col="labelCol" :wrapper-col="wrapperCol">
+        <a-input-number v-model="config.app.windowSize.width" :min="600" :max="2400"/>&nbsp;*
+        <a-input-number v-model="config.app.windowSize.height" :min="500" :max="2000"/>
+      </a-form-item>
       <hr/>
       <a-form-item label="自动检查更新" :label-col="labelCol" :wrapper-col="wrapperCol">
         <a-radio-group v-model="config.app.autoChecked" default-value="light" button-style="solid">