diff --git a/src/components/StupWizard/index.tsx b/src/components/StupWizard/index.tsx
index c476ef0..5d3edf0 100644
--- a/src/components/StupWizard/index.tsx
+++ b/src/components/StupWizard/index.tsx
@@ -314,13 +314,17 @@ const VideoComponents = () => {
                             placeholder={videoDeviceManager.list.length ? '请选择设备' : '未检测到摄像头'}
                             options={videoDeviceManager.list} style={{ flexGrow: 1, marginRight: '10px' }}
                             value={videoDeviceManager.item} onChange={async (e) => {
-                                setting.videoDeviceId = e;
-                                storage.setItem('setting', JSON.stringify(setting))
                                 setVideoDeviceManager({
                                     ...videoDeviceManager,
                                     item: e
                                 })
                                 agora.setVideoDeviceManager(e)
+                                if (!setting.videoDeviceId) {
+                                    const userInfo = JSON.parse(storage.getItem('user') as string)
+                                    await agora.startPreview('videoPreview', Number(userInfo.screenShareId))
+                                }
+                                setting.videoDeviceId = e;
+                                storage.setItem('setting', JSON.stringify(setting))
                             }} />
 
                     </div>
@@ -347,7 +351,7 @@ const VideoComponents = () => {
                                         sourceIndex: ''
                                     })
                                 }}>
-                                    <input type="color" name="" id="color-select" onBlur={(e) => {
+                                    <input type="color" name="" id="color-select" onChange={(e) => {
                                         let hexInt = parseInt('0x' + e.target.value.split('#')[1], 16)
                                         setting.virtualBackground.color = hexInt
                                         storage.setItem('setting', JSON.stringify(setting))