diff --git a/web/src/views/cameraConfig/roiConfig.vue b/web/src/views/cameraConfig/roiConfig.vue
index d689682d7..48bc24e3d 100644
--- a/web/src/views/cameraConfig/roiConfig.vue
+++ b/web/src/views/cameraConfig/roiConfig.vue
@@ -153,7 +153,9 @@ export default {
       getSnapUrl(this.cameraId, force).then(res => {
         const data = res.data || res
         if (data.status === 'ok' && data.url) {
-          this.snapUrl = data.url
+          // 添加时间戳防止浏览器缓存旧截图
+          const url = data.url
+          this.snapUrl = url + (url.includes('?') ? '&' : '?') + '_t=' + Date.now()
           if (data.stale) {
             this.$message.warning('截图为缓存数据，边缘设备可能离线')
           }