diff --git a/core/backend/apps/ai/free_video.py b/core/backend/apps/ai/free_video.py
index fb30957..aeafc33 100644
--- a/core/backend/apps/ai/free_video.py
+++ b/core/backend/apps/ai/free_video.py
@@ -504,7 +504,9 @@ def _store_free_video_media(*, task: AITask, media: str) -> Asset:
         id=asset_id,
         team=task.team,
         created_by=task.created_by,
-        name=(prompt[:50] or "自由创作视频"),
+        # Asset.name 是通用资产字段，受 255 字符上限约束；完整显示标题由资产接口从
+        # 关联任务的 request_payload.prompt 派生，避免再出现 50 字符业务截断。
+        name=(prompt[:255] or "自由创作视频"),
         asset_type=Asset.Type.VIDEO,
         source=Asset.Source.AI_GENERATED,
         category=Asset.Category.FREE_CREATE,
diff --git a/core/backend/apps/ai/tests.py b/core/backend/apps/ai/tests.py
index ddf3f4f..1ed3f09 100644
--- a/core/backend/apps/ai/tests.py
+++ b/core/backend/apps/ai/tests.py
@@ -254,6 +254,24 @@ class FreeVideoAssetDeletionTests(TestCase):
         self.assertEqual(trash_data["video_url"], "http://tos.example/video.mp4")
         self.assertEqual(trash_data["thumbnail_url"], "http://tos.example/free-video-poster.jpg")
 
+    def test_asset_library_uses_full_free_video_title_and_searches_it(self):
+        """资产库应从关联任务恢复历史截断标题，并支持搜索完整标题的后半段。"""
+        full_prompt = "@O1CN01anEq9u245Jn8Ccedn_!!4611686018427385691-0-s-完整后缀"
+        self.task.request_payload["prompt"] = full_prompt
+        self.task.save(update_fields=["request_payload"])
+        self.asset.name = full_prompt[:50]  # 模拟旧版本写库的截断数据
+        self.asset.save(update_fields=["name"])
+
+        client = APIClient()
+        client.force_authenticate(self.user)
+        listing = client.get("/api/assets/?tab=video_creations&page_size=10").json()
+
+        self.assertEqual(listing["count"], 1)
+        self.assertEqual(listing["results"][0]["display_name"], full_prompt)
+
+        search = client.get(f"/api/assets/?tab=video_creations&q={full_prompt[-4:]}&page_size=10").json()
+        self.assertEqual([row["id"] for row in search["results"]], [str(self.asset.id)])
+
     def test_direct_asset_delete_stays_in_asset_trash(self):
         client = APIClient()
         client.force_authenticate(self.user)
diff --git a/core/backend/apps/assets/serializers.py b/core/backend/apps/assets/serializers.py
index 9596e53..01ca5ab 100644
--- a/core/backend/apps/assets/serializers.py
+++ b/core/backend/apps/assets/serializers.py
@@ -60,9 +60,25 @@ class AssetFileSerializer(serializers.ModelSerializer):
 
 class AssetSerializer(serializers.ModelSerializer):
     files = AssetFileSerializer(many=True, read_only=True)
+    # 自由创作视频的可见标题以任务原始提示词为准，Asset.name 仅保留通用资产名称/兼容搜索。
+    # 这样历史的 50 字符截断资产也能直接恢复完整标题，无需数据迁移。
+    display_name = serializers.SerializerMethodField()
     # 资产归属商品(只读):商品详情页据此只展示「该商品」的 AI 素材,而非全团队
     product = serializers.SerializerMethodField()
 
+    def get_display_name(self, obj):
+        task = obj.origin_task
+        if (
+            obj.category == Asset.Category.FREE_CREATE
+            and obj.asset_type == Asset.Type.VIDEO
+            and task is not None
+            and task.task_type == "free_video"
+        ):
+            prompt = (task.request_payload or {}).get("prompt")
+            if isinstance(prompt, str) and prompt.strip():
+                return prompt.strip()
+        return obj.name
+
     def get_product(self, obj):
         """解析资产所属商品:
         1) 独立生图(图片创作/模特图/平台套图):生图时已写入 metadata.product_id;
@@ -81,6 +97,7 @@ class AssetSerializer(serializers.ModelSerializer):
         fields = [
             "id",
             "name",
+            "display_name",
             "asset_type",
             "source",
             "category",
diff --git a/core/backend/apps/assets/views.py b/core/backend/apps/assets/views.py
index 584feb2..b7e9697 100644
--- a/core/backend/apps/assets/views.py
+++ b/core/backend/apps/assets/views.py
@@ -94,7 +94,7 @@ def _batch_name(name: str) -> str:
 
 class AssetViewSet(TeamScopedViewSetMixin, ModelViewSet):
     # select_related 回溯链:asset → origin_task → project,供序列化器解析资产归属商品(避免 N+1)。
-    # ★ defer 掉 AITask 的两个巨型 JSON 列(request/response payload):列表序列化只需 project.product_id,
+    # ★ defer 掉 AITask 的两个巨型 JSON 列(request/response payload):绝大多数列表序列化只需 project.product_id,
     #   不 defer 的话 select_related 会把每个资产关联 AITask 的完整 AI 请求/响应 payload 全拖出来,
     #   200 个资产实测 100s+(数据越多越慢);defer 后 <1s、product 仍正常解析、无额外查询。
     queryset = (
@@ -134,6 +134,12 @@ class AssetViewSet(TeamScopedViewSetMixin, ModelViewSet):
             return trash_qs.exclude(owned_by_deleted_free_creation).order_by("-updated_at")
         qs = qs.filter(is_deleted=False, purged_at__isnull=True)  # 软删资产不出现在资产库
         p = self.request.query_params
+        tab = p.get("tab")
+        # 视频自由创作的显示标题来自关联任务的原始 prompt；只在该专用 tab 取回 JSON，避免普通资产列表
+        # 重新加载巨型请求/响应 payload。
+        if tab == "video_creations":
+            # Django 没有 QuerySet.undefer()；先清除默认延迟字段，再仅保留不需要的 response_payload 延迟加载。
+            qs = qs.defer(None).defer("origin_task__response_payload")
         # 资产库列表/批次默认只展示「已加入资产库」的资产(in_library=True);未加入的工作台生成图不出现在这里。
         # 仅对列表型 action 过滤——retrieve / set-library / submit-review 等仍要能取到未加入的资产。
         # 任务中心要看「全部生成图」(含未入库),传 ?in_library=all 旁路;?in_library=false 只看未入库。
@@ -145,8 +151,8 @@ class AssetViewSet(TeamScopedViewSetMixin, ModelViewSet):
                 qs = qs.filter(in_library=False)
             else:
                 qs = qs.filter(in_library=True)
-        if p.get("tab"):
-            qs = qs.filter(_tab_q(p["tab"]))
+        if tab:
+            qs = qs.filter(_tab_q(tab))
         if p.get("category"):
             qs = qs.filter(category=p["category"])
         if p.get("asset_type"):
@@ -175,7 +181,13 @@ class AssetViewSet(TeamScopedViewSetMixin, ModelViewSet):
                 | Q(product_images__product_id=pid)
             ).distinct()
         if p.get("q"):
-            qs = qs.filter(Q(name__icontains=p["q"]) | Q(description__icontains=p["q"]))
+            query = p["q"]
+            title_q = Q(name__icontains=query) | Q(description__icontains=query)
+            # display_name 不落在 Asset 表；视频自由创作搜索需同时匹配关联任务的完整提示词，
+            # 才能找到历史被截为前 50 字符的标题后半段。
+            if tab == "video_creations":
+                title_q |= Q(origin_task__task_type="free_video", origin_task__request_payload__prompt__icontains=query)
+            qs = qs.filter(title_q)
         for key, val in p.items():
             if key.startswith("m_") and val:
                 qs = qs.filter(**{f"metadata__{key[2:]}": val})
diff --git a/core/frontend/src/library-page.css b/core/frontend/src/library-page.css
index 81a916f..e4b6c80 100644
--- a/core/frontend/src/library-page.css
+++ b/core/frontend/src/library-page.css
@@ -14,7 +14,10 @@
   /* 有 preview_url 显真图:铺满缩略容器、cover 裁切、继承 8px 圆角(由 .placeholder overflow:hidden 裁切) */
   .asset-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; border-radius: inherit; }
   .asset-body { padding: 12px 14px; }
-  .asset-name { font-size: 13px; font-weight: 600; color: var(--accent-black); }
+  .asset-name {
+    font-size: 14px; font-weight: 500; line-height: 1.4; color: var(--accent-black);
+    overflow-wrap: anywhere; word-break: break-word;
+  }
   .asset-meta { font-size: 12px; color: var(--black-alpha-48); margin-top: 3px; font-family: var(--font-mono); letter-spacing: .02em; }
   .asset-badge { position: absolute; top: 8px; left: 8px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em; padding: 2px 6px; background: var(--surface); border: 1px solid var(--border-faint); border-radius: var(--r-sm); color: var(--black-alpha-56); }
   .asset-card { position: relative; }
@@ -243,7 +246,8 @@ body.edit-mode .library-page .batch-card.selected { border-color: var(--heat); b
 .pack-modal-bg.under-confirm { z-index: 990; }
 .pack-modal { background: var(--surface); border: 1px solid var(--border-faint); border-radius: var(--r-md); width: min(900px, 92vw); max-height: 86vh; display: flex; flex-direction: column; overflow: hidden; }
 .pack-modal-h { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border-faint); }
-.pack-modal-h h2 { font-size: 16px; font-weight: 600; color: var(--accent-black); }
+.pack-modal-h > div { min-width: 0; }
+.pack-modal-h h2 { font-size: 16px; font-weight: 600; line-height: 1.4; color: var(--accent-black); overflow-wrap: anywhere; word-break: break-word; }
 .pack-modal-h .x { width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; border: none; background: transparent; color: var(--black-alpha-48); border-radius: var(--r-sm); cursor: pointer; flex-shrink: 0; }
 .pack-modal-h .x:hover { background: var(--black-alpha-8); color: var(--accent-black); }
 .pack-clip-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; padding: 18px 20px; overflow-y: auto; }
@@ -253,7 +257,7 @@ body.edit-mode .library-page .batch-card.selected { border-color: var(--heat); b
 .pack-clip img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; border-radius: var(--r-sm); background: var(--background-lighter); display: block; transition: opacity .15s; }
 .pack-clip.as-btn:hover img { opacity: .88; }
 .pack-clip .pack-clip-ph { width: 100%; aspect-ratio: 9 / 16; display: flex; align-items: center; justify-content: center; border-radius: var(--r-sm); background: var(--background-lighter); }
-.pack-clip-name { font-size: 11px; color: var(--black-alpha-48); margin-top: 4px; text-align: center; letter-spacing: .02em; }
+.pack-clip-name { font-size: 11px; line-height: 1.5; color: var(--black-alpha-48); margin-top: 4px; text-align: center; letter-spacing: .02em; overflow-wrap: anywhere; word-break: break-word; }
 /* R108:批次弹窗内单张悬浮删除 icon(复用共享 .card-del-btn,这里只补 hover 触发,不改共享类本体) */
 .pack-modal .pack-clip { position: relative; }
 .pack-modal .pack-clip:hover .card-del-btn,
diff --git a/core/frontend/src/routes/library.tsx b/core/frontend/src/routes/library.tsx
index 2adba13..13ae5bb 100644
--- a/core/frontend/src/routes/library.tsx
+++ b/core/frontend/src/routes/library.tsx
@@ -89,6 +89,7 @@ function personMissingTri(asset: Asset): boolean {
 }
 
 function freeVideoToPack(asset: Asset): VideoPack {
+  const displayName = asset.display_name?.trim() || asset.name || "视频自由创作";
   const files = asset.files || [];
   const video = files.find((f) => f.is_primary && (f.content_type || "").startsWith("video/"))
     || files.find((f) => (f.content_type || "").startsWith("video/"));
@@ -96,9 +97,9 @@ function freeVideoToPack(asset: Asset): VideoPack {
     || files.find((f) => (f.content_type || "").startsWith("image/"));
   return {
     project_id: `free-video:${asset.id}`,
-    project_name: asset.name || "视频自由创作",
+    project_name: displayName,
     product_cover: poster?.preview_url || "",
-    clips: [{ id: asset.id, name: asset.name || "视频", url: video?.preview_url || "" }]
+    clips: [{ id: asset.id, name: displayName, url: video?.preview_url || "" }]
   };
 }
 
diff --git a/core/frontend/src/types.ts b/core/frontend/src/types.ts
index ec54e7f..67e342c 100644
--- a/core/frontend/src/types.ts
+++ b/core/frontend/src/types.ts
@@ -234,6 +234,8 @@ export type Product = {
 export type Asset = {
   id: string;
   name: string;
+  // 自由创作视频由后端从关联任务的完整 prompt 派生；其他资产与 name 相同。
+  display_name?: string;
   asset_type: string;
   source: string;
   category: string;