diff --git a/src/app/play/page.tsx b/src/app/play/page.tsx
index 285177a..4cc3829 100644
--- a/src/app/play/page.tsx
+++ b/src/app/play/page.tsx
@@ -486,7 +486,7 @@ function PlayPageClient() {
         setNeedPrefer(false);
         setCurrentSource(preferredSource.source);
         setCurrentId(preferredSource.id);
-        setVideoYear(preferredSource.year || 'unknown');
+        setVideoYear(preferredSource.year);
 
         // 替换URL参数
         const newUrl = new URL(window.location.href);
@@ -507,13 +507,11 @@ function PlayPageClient() {
             source: currentSource,
             id: currentId,
             fallbackTitle: searchTitle || videoTitleRef.current.trim(),
-            fallbackYear:
-              videoYearRef.current === 'unknown' ? '' : videoYearRef.current,
           });
 
           // 更新状态保存详情
           setVideoTitle(detailData.title || videoTitleRef.current);
-          setVideoYear(detailData.year || 'unknown');
+          setVideoYear(detailData.year);
           setVideoCover(detailData.poster);
           setDetail(detailData);
 
@@ -525,7 +523,7 @@ function PlayPageClient() {
           // 清理URL参数（移除index参数）
           if (searchParams.has('index')) {
             const newUrl = new URL(window.location.href);
-            newUrl.searchParams.set('year', detailData.year || 'unknown');
+            newUrl.searchParams.set('year', detailData.year);
             newUrl.searchParams.set(
               'title',
               detailData.title || videoTitleRef.current
@@ -661,10 +659,7 @@ function PlayPageClient() {
             result.title.toLowerCase() ===
               videoTitleRef.current.toLowerCase() &&
             (videoYearRef.current
-              ? videoYearRef.current === 'unknown'
-                ? result.year === ''
-                : result.year.toLowerCase() ===
-                  videoYearRef.current.toLowerCase()
+              ? result.year.toLowerCase() === videoYearRef.current.toLowerCase()
               : true) &&
             (detailRef.current
               ? (detailRef.current.episodes.length === 1 &&
@@ -725,8 +720,6 @@ function PlayPageClient() {
         source: newSource,
         id: newId,
         fallbackTitle: searchTitle || newTitle.trim(),
-        fallbackYear:
-          videoYearRef.current === 'unknown' ? '' : videoYearRef.current,
       });
 
       // 尝试跳转到当前正在播放的集数
@@ -749,11 +742,11 @@ function PlayPageClient() {
       const newUrl = new URL(window.location.href);
       newUrl.searchParams.set('source', newSource);
       newUrl.searchParams.set('id', newId);
-      newUrl.searchParams.set('year', newDetail.year || 'unknown');
+      newUrl.searchParams.set('year', newDetail.year);
       window.history.replaceState({}, '', newUrl.toString());
 
       setVideoTitle(newDetail.title || newTitle);
-      setVideoYear(newDetail.year || 'unknown');
+      setVideoYear(newDetail.year);
       setVideoCover(newDetail.poster);
       setCurrentSource(newSource);
       setCurrentId(newId);
@@ -925,7 +918,7 @@ function PlayPageClient() {
       await savePlayRecord(currentSourceRef.current, currentIdRef.current, {
         title: videoTitleRef.current,
         source_name: detailRef.current?.source_name || '',
-        year: detailRef.current?.year || 'unknown',
+        year: detailRef.current?.year,
         cover: detailRef.current?.poster || '',
         index: currentEpisodeIndexRef.current + 1, // 转换为1基索引
         total_episodes: detailRef.current?.episodes.length || 1,
@@ -939,7 +932,7 @@ function PlayPageClient() {
       console.log('播放进度已保存:', {
         title: videoTitleRef.current,
         episode: currentEpisodeIndexRef.current + 1,
-        year: detailRef.current?.year || 'unknown',
+        year: detailRef.current?.year,
         progress: `${Math.floor(currentTime)}/${Math.floor(duration)}`,
       });
     } catch (err) {
@@ -1013,7 +1006,7 @@ function PlayPageClient() {
         {
           title: videoTitleRef.current,
           source_name: detailRef.current?.source_name || '',
-          year: detailRef.current?.year || 'unknown',
+          year: detailRef.current?.year,
           cover: detailRef.current?.poster || '',
           total_episodes: detailRef.current?.episodes.length || 1,
           save_time: Date.now(),
diff --git a/src/app/search/page.tsx b/src/app/search/page.tsx
index 1daaf91..0531563 100644
--- a/src/app/search/page.tsx
+++ b/src/app/search/page.tsx
@@ -40,7 +40,7 @@ function SearchPageClient() {
   const aggregatedResults = useMemo(() => {
     const map = new Map<string, SearchResult[]>();
     searchResults.forEach((item) => {
-      // 使用 title + year + type 作为键，若 year 不存在则使用 'unknown'
+      // 使用 title + year + type 作为键，year 必然存在，但依然兜底 'unknown'
       const key = `${item.title}-${item.year || 'unknown'}-${
         item.episodes.length === 1 ? 'movie' : 'tv'
       }`;
diff --git a/src/components/VideoCard.tsx b/src/components/VideoCard.tsx
index ab64b3a..b49a4f7 100644
--- a/src/components/VideoCard.tsx
+++ b/src/components/VideoCard.tsx
@@ -96,9 +96,7 @@ export default function VideoCard({
     aggregateData?.mostFrequentDoubanId ?? douban_id
   );
   const actualEpisodes = aggregateData?.mostFrequentEpisodes ?? episodes;
-  const actualYear = isAggregate
-    ? aggregateData?.first.year || 'unknown'
-    : year;
+  const actualYear = aggregateData?.first.year ?? year;
   const actualQuery = query || '';
   const actualSearchType = isAggregate
     ? aggregateData?.first.episodes.length === 1
diff --git a/src/lib/downstream.ts b/src/lib/downstream.ts
index 4bf5551..6241245 100644
--- a/src/lib/downstream.ts
+++ b/src/lib/downstream.ts
@@ -84,7 +84,9 @@ export async function searchFromApi(
         source: apiSite.key,
         source_name: apiName,
         class: item.vod_class,
-        year: item.vod_year ? item.vod_year.match(/\d{4}/)?.[0] || '' : '',
+        year: item.vod_year
+          ? item.vod_year.match(/\d{4}/)?.[0] || ''
+          : 'unknown',
         desc: cleanHtmlTags(item.vod_content || ''),
         type_name: item.type_name,
         douban_id: item.vod_douban_id,
@@ -154,7 +156,7 @@ export async function searchFromApi(
                 class: item.vod_class,
                 year: item.vod_year
                   ? item.vod_year.match(/\d{4}/)?.[0] || ''
-                  : '',
+                  : 'unknown',
                 desc: cleanHtmlTags(item.vod_content || ''),
                 type_name: item.type_name,
                 douban_id: item.vod_douban_id,
@@ -261,7 +263,7 @@ export async function getDetailFromApi(
       type: videoDetail.type_name,
       year: videoDetail.vod_year
         ? videoDetail.vod_year.match(/\d{4}/)?.[0] || ''
-        : '',
+        : 'unknown',
       area: videoDetail.vod_area,
       director: videoDetail.vod_director,
       actor: videoDetail.vod_actor,
@@ -330,7 +332,7 @@ async function handleSpecialSourceDetail(
 
   // 提取年份
   const yearMatch = html.match(/>(\d{4})</);
-  const yearText = yearMatch ? yearMatch[1] : '';
+  const yearText = yearMatch ? yearMatch[1] : 'unknown';
 
   return {
     code: 200,
diff --git a/src/lib/fetchVideoDetail.client.ts b/src/lib/fetchVideoDetail.client.ts
index 1231ed2..16104b0 100644
--- a/src/lib/fetchVideoDetail.client.ts
+++ b/src/lib/fetchVideoDetail.client.ts
@@ -16,7 +16,6 @@ interface FetchVideoDetailOptions {
   source: string;
   id: string;
   fallbackTitle?: string;
-  fallbackYear?: string;
 }
 
 /**
@@ -28,7 +27,6 @@ export async function fetchVideoDetail({
   source,
   id,
   fallbackTitle = '',
-  fallbackYear = '',
 }: FetchVideoDetailOptions): Promise<VideoDetail> {
   // 优先通过搜索接口查找精确匹配
   if (fallbackTitle) {
@@ -67,7 +65,7 @@ export async function fetchVideoDetail({
     source: data?.videoInfo?.source || source,
     source_name: data?.videoInfo?.source_name || '',
     class: data?.videoInfo?.remarks || '',
-    year: data?.videoInfo?.year || fallbackYear || '',
+    year: data?.videoInfo?.year || 'unknown',
     desc: data?.videoInfo?.desc || '',
     type_name: data?.videoInfo?.type || '',
   } as VideoDetail;