diff --git a/TUICallKit-Vue3/pages/training/metronome.vue b/TUICallKit-Vue3/pages/training/metronome.vue
index 07f10639..12f4db2c 100644
--- a/TUICallKit-Vue3/pages/training/metronome.vue
+++ b/TUICallKit-Vue3/pages/training/metronome.vue
@@ -32,7 +32,7 @@
                     <video
                         id="runner-video"
                         class="runner-video"
-                        src="/static/training/runner.mp4"
+                        :src="RUNNER_VIDEO_URL"
                         :muted="true"
                         :loop="true"
                         :autoplay="true"
@@ -92,6 +92,14 @@ import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
 import { onShow, onHide } from '@dcloudio/uni-app'
 import { useMetronome } from '@/hooks/useMetronome'
 
+/**
+ * 跑步动画视频(腾讯云 COS CDN)
+ * 注意:小程序后台需将 cos.ap-guangzhou.myqcloud.com 加入 downloadFile 合法域名,
+ *       否则正式发布版会被拦截(开发版默认不校验)
+ */
+const RUNNER_VIDEO_URL =
+    'https://gz-1349751149.cos.ap-guangzhou.myqcloud.com/uploads/video/20260525/20260525164014ef89f8862.mp4'
+
 /**
  * 视频原速对应的 BPM 基准
  * runner.mp4 时长 0.97s, 一个 walk cycle (左右脚各一次) ≈ 124 BPM 步频