diff --git a/index.html b/index.html
index ad88124..532a651 100644
--- a/index.html
+++ b/index.html
@@ -6,33 +6,56 @@
 	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
 	<link rel="icon" type="image/x-icon" href="./src/assets/logo.png" />
 	<title>光伏电站智能监控与运维系统</title>
-	<script>
-		window.CESIUM_BASE_URL = "https://cdnjs.cloudflare.com/ajax/libs/cesium/1.114.0/";
-	</script>
 
-	<script src="/js/jswebrtc.min.js"></script>
-	<script src="/js/jswebrtcnew.js"></script>
+	<!-- 预加载关键域名（提速DNS） -->
+	<link rel="dns-prefetch" href="https://cdnjs.cloudflare.com">
+	<link rel="dns-prefetch" href="https://unpkg.com">
+	<link rel="dns-prefetch" href="https://cdn.jsdelivr.net">
+	<link rel="dns-prefetch" href="https://lf-unpkg.volccdn.com">
 
-
-	<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
-		integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin="" />
-	<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"
-		integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script>
-	<script src="https://cdn.jsdelivr.net/npm/cesium@latest/Build/Cesium/Cesium.js"></script>
-	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/cesium@latest/Build/Cesium/Widgets/widgets.css">
+	<!-- CSS 异步加载，不阻塞页面渲染 -->
+	<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" media="print"
+		onload="this.media='all'">
+	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/cesium@latest/Build/Cesium/Widgets/widgets.css"
+		media="print" onload="this.media='all'">
 	<link rel="stylesheet"
-		href="https://lf-unpkg.volccdn.com/obj/vcloudfe/sdk/@volcengine/veplayer/2.11.2/umd/veplayer.production.css">
-
-
-
-	<script src="https://cdn.jsdelivr.net/npm/hls.js@1.5.8/dist/hls.min.js"></script>
-	<script
-		src="https://lf-unpkg.volccdn.com/obj/vcloudfe/sdk/@volcengine/veplayer/2.11.2/umd/veplayer.production.js"></script>
+		href="https://lf-unpkg.volccdn.com/obj/vcloudfe/sdk/@volcengine/veplayer/2.11.2/umd/veplayer.production.css"
+		media="print" onload="this.media='all'">
 </head>
 
 <body>
 	<div id="root"></div>
+
 	<script type="module" src="/src/main.tsx"></script>
+
+	<!-- ========== 所有大库 延迟异步加载 ========== -->
+	<script>
+		// 等页面加载完成后，再异步加载地图/视频库，不阻塞首屏
+		window.addEventListener('DOMContentLoaded', () => {
+			const loadScript = (src) => {
+				return new Promise((resolve) => {
+					const s = document.createElement('script');
+					s.src = src;
+					s.async = true;
+					s.onload = resolve;
+					document.body.appendChild(s);
+				});
+			};
+
+			// 按顺序加载
+			Promise.resolve()
+				.then(() => loadScript('/js/jswebrtc.min.js'))
+				.then(() => loadScript('/js/jswebrtcnew.js'))
+				.then(() => loadScript('https://unpkg.com/leaflet@1.9.4/dist/leaflet.js'))
+				.then(() => loadScript('https://cdn.jsdelivr.net/npm/cesium@latest/Build/Cesium/Cesium.js'))
+				.then(() => loadScript('https://cdn.jsdelivr.net/npm/hls.js@1.5.8/dist/hls.min.js'))
+				.then(() => loadScript('https://lf-unpkg.volccdn.com/obj/vcloudfe/sdk/@volcengine/veplayer/2.11.2/umd/veplayer.production.js'))
+				.then(() => {
+					console.log('✅ 所有地图/视频SDK加载完成');
+					window.CESIUM_BASE_URL = "https://cdnjs.cloudflare.com/ajax/libs/cesium/1.114.0/";
+				});
+		});
+	</script>
 </body>
 
 </html>
