diff --git a/video-gen-app/src/pages/GenerateConver.tsx b/video-gen-app/src/pages/GenerateConver.tsx
index e15c24ac..b76b60fd 100644
--- a/video-gen-app/src/pages/GenerateConver.tsx
+++ b/video-gen-app/src/pages/GenerateConver.tsx
@@ -254,8 +254,20 @@ const AIChatPage: React.FC = () => {
     // 设置5秒轮询
     pollingRef.current = window.setInterval(() => {
       getgen_list(Pagebreak).then((data: any) => {
-        setGen_list(data.items);
-        setTotalnumber(data.total)
+        // 只更新正在生成的任务，不影响其他已加载的数据
+        setGen_list((prevList: any[]) => {
+          return prevList.map((prevItem: any) => {
+            // 只更新正在生成的任务
+            if (prevItem.status === 'generating') {
+              const newItem = data.items.find((item: any) => item.id === prevItem.id);
+              // 如果找到了对应的新数据，使用新数据；否则保持旧数据
+              return newItem || prevItem;
+            }
+            // 非生成中的任务保持不变
+            return prevItem;
+          });
+        });
+        setTotalnumber(data.total);
       }).catch((error) => {
       });
     }, 5000);
@@ -574,10 +586,12 @@ const AIChatPage: React.FC = () => {
     setPreviewUrl('');
   };
 
-  const handleDownload = () => {
+  const handleDownload = (e: React.MouseEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
     if (!previewUrl) return;
     const link = document.createElement('a');
-    link.href = previewUrl;
+    link.href = `${import.meta.env.VITE_API_BASE || "http://localhost:8000"}${previewUrl}`;
     link.download = previewType === 'image' ? 'image.png' : 'video.mp4';
     document.body.appendChild(link);
     link.click();
diff --git a/video-gen-app/src/pages/GeneratedRecord.tsx b/video-gen-app/src/pages/GeneratedRecord.tsx
index af4dbb2e..dd7ca096 100644
--- a/video-gen-app/src/pages/GeneratedRecord.tsx
+++ b/video-gen-app/src/pages/GeneratedRecord.tsx
@@ -28,6 +28,45 @@ const GeneratedRecord: React.FC = () => {
     const [previewVisible, setPreviewVisible] = useState(false);
     const [previewItem, setPreviewItem] = useState<any>(null);
     const videoRef = React.createRef<HTMLVideoElement>();
+
+    // 从URL中提取exp时间戳（支持相对路径和完整URL）
+    const extractExpTimestamp = (url: string): number | null => {
+        if (!url) return null;
+        
+        try {
+            // 尝试作为完整URL解析
+            const urlObj = new URL(url);
+            const expStr = urlObj.searchParams.get('exp');
+            if (expStr) {
+                return parseInt(expStr, 10);
+            }
+            return null;
+        } catch {
+            // 如果完整URL解析失败，尝试解析相对路径中的查询参数
+            try {
+                const queryStart = url.indexOf('?');
+                if (queryStart !== -1) {
+                    const queryString = url.substring(queryStart + 1);
+                    const params = new URLSearchParams(queryString);
+                    const expStr = params.get('exp');
+                    if (expStr) {
+                        return parseInt(expStr, 10);
+                    }
+                }
+                return null;
+            } catch {
+                return null;
+            }
+        }
+    };
+
+    // 检查媒体是否过期
+    const isMediaExpired = (url: string): boolean => {
+        const expTimestamp = extractExpTimestamp(url);
+        if (!expTimestamp) return false;
+        const currentTimestamp = Math.floor(Date.now() / 1000);
+        return currentTimestamp > expTimestamp;
+    };
     
     // 下载文件
     const handleDownload = (item: any) => {
@@ -689,8 +728,9 @@ const GeneratedRecord: React.FC = () => {
                                             window.open(url, '_blank');
                                         }}
                                         style={{ flex: 1, borderRadius: 8 }}
+                                        disabled={isMediaExpired(previewItem.videoUrl || previewItem.imageUrl)}
                                     >
-                                        下载
+                                        {isMediaExpired(previewItem.videoUrl || previewItem.imageUrl) ? '资源已过期' : '下载'}
                                     </Button>
                                     <Button
                                         onClick={handleClosePreview}