diff --git a/backend/apps/generation/migrations/0010_generationrecord_seed.py b/backend/apps/generation/migrations/0010_generationrecord_seed.py
new file mode 100644
index 0000000..fd0beb9
--- /dev/null
+++ b/backend/apps/generation/migrations/0010_generationrecord_seed.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.2.29 on 2026-03-22 14:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('generation', '0009_generationrecord_is_favorited'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='generationrecord',
+            name='seed',
+            field=models.BigIntegerField(default=-1, verbose_name='种子值'),
+        ),
+    ]
diff --git a/backend/apps/generation/models.py b/backend/apps/generation/models.py
index 72045ce..a4cf854 100644
--- a/backend/apps/generation/models.py
+++ b/backend/apps/generation/models.py
@@ -45,6 +45,7 @@ class GenerationRecord(models.Model):
     error_message = models.TextField(blank=True, default='', verbose_name='错误信息')
     reference_urls = models.JSONField(default=list, blank=True, verbose_name='参考素材信息')
     is_favorited = models.BooleanField(default=False, verbose_name='已收藏')
+    seed = models.BigIntegerField(default=-1, verbose_name='种子值')
     created_at = models.DateTimeField(auto_now_add=True, db_index=True, verbose_name='创建时间')
 
     class Meta:
diff --git a/backend/apps/generation/views.py b/backend/apps/generation/views.py
index 355c2b2..c689e5d 100644
--- a/backend/apps/generation/views.py
+++ b/backend/apps/generation/views.py
@@ -162,6 +162,7 @@ def video_generate_view(request):
     model = serializer.validated_data['model']
     aspect_ratio = serializer.validated_data['aspect_ratio']
     search_mode = request.data.get('search_mode', 'off')
+    seed = _safe_int(request.data.get('seed', -1), -1)
 
     # ── 预估 token 和费用 ──
     config = QuotaConfig.objects.get_or_create(pk=1)[0]
@@ -329,6 +330,7 @@ def video_generate_view(request):
             cost_amount=0,
             base_cost_amount=0,
             reference_urls=reference_snapshots,
+            seed=seed,
         )
 
         locked_team.frozen_amount = F('frozen_amount') + estimated_cost
@@ -346,6 +348,7 @@ def video_generate_view(request):
                 aspect_ratio=aspect_ratio,
                 duration=duration,
                 search_mode=search_mode,
+                seed=seed,
             )
             ark_task_id = ark_response.get('id', '')
             record.ark_task_id = ark_task_id
@@ -479,6 +482,11 @@ def video_task_detail_view(request, task_id):
             new_status = map_status(ark_resp.get('status', ''))
             record.status = new_status
 
+            # 保存火山返回的实际 seed 值
+            returned_seed = ark_resp.get('seed')
+            if returned_seed is not None:
+                record.seed = returned_seed
+
             if new_status == 'completed':
                 video_url = extract_video_url(ark_resp)
                 if video_url:
@@ -513,7 +521,7 @@ def video_task_detail_view(request, task_id):
                     # Seedance 未计费，释放冻结
                     _release_freeze(record)
 
-            record.save(update_fields=['status', 'result_url', 'error_message'])
+            record.save(update_fields=['status', 'result_url', 'error_message', 'seed'])
         except Exception as e:
             logger.exception('AirDrama API query failed for %s', ark_task_id)
 
@@ -541,6 +549,7 @@ def _serialize_task(record):
         'error_message': d.get('error_message', ''),
         'reference_urls': d.get('reference_urls') or [],
         'is_favorited': record.is_favorited,
+        'seed': record.seed,
         'created_at': record.created_at.isoformat(),
     }
 
diff --git a/backend/utils/airdrama_client.py b/backend/utils/airdrama_client.py
index 4bcef4c..60756c3 100644
--- a/backend/utils/airdrama_client.py
+++ b/backend/utils/airdrama_client.py
@@ -77,7 +77,7 @@ def _headers():
 
 
 def create_task(prompt, model, content_items, aspect_ratio, duration,
-                generate_audio=True, search_mode='off'):
+                generate_audio=True, search_mode='off', seed=-1):
     """Create a video generation task.
 
     Args:
@@ -106,6 +106,7 @@ def create_task(prompt, model, content_items, aspect_ratio, duration,
         'ratio': aspect_ratio,
         'duration': duration,
         'watermark': False,
+        'seed': seed,
     }
 
     if search_mode and search_mode != 'off':
diff --git a/web/src/components/GenerationCard.tsx b/web/src/components/GenerationCard.tsx
index 4c40f83..8d16575 100644
--- a/web/src/components/GenerationCard.tsx
+++ b/web/src/components/GenerationCard.tsx
@@ -383,6 +383,12 @@ export function GenerationCard({ task, onOpenDetail }: Props) {
                   </div>
                 </>
               )}
+              {(task.seed ?? -1) > 0 && (
+                <div className={styles.detailRow}>
+                  <span>种子值</span>
+                  <span>{task.seed}</span>
+                </div>
+              )}
             </div>
           )}
         </div>
diff --git a/web/src/components/InputBar.module.css b/web/src/components/InputBar.module.css
index 9372f29..605cfbf 100644
--- a/web/src/components/InputBar.module.css
+++ b/web/src/components/InputBar.module.css
@@ -1,3 +1,10 @@
+/* Hide number input spinners */
+:global(.hide-spin::-webkit-outer-spin-button),
+:global(.hide-spin::-webkit-inner-spin-button) {
+  -webkit-appearance: none;
+  margin: 0;
+}
+
 .wrapper {
   width: 100%;
   padding: 8px 16px 20px;
diff --git a/web/src/components/InputBar.tsx b/web/src/components/InputBar.tsx
index 6a4c0a9..472166a 100644
--- a/web/src/components/InputBar.tsx
+++ b/web/src/components/InputBar.tsx
@@ -76,6 +76,10 @@ export function InputBar() {
   const [assetModalOpen, setAssetModalOpen] = useState(false);
   const searchMode = useInputBarStore((s) => s.searchMode);
   const setSearchMode = useInputBarStore((s) => s.setSearchMode);
+  const seed = useInputBarStore((s) => s.seed);
+  const seedEnabled = useInputBarStore((s) => s.seedEnabled);
+  const setSeed = useInputBarStore((s) => s.setSeed);
+  const setSeedEnabled = useInputBarStore((s) => s.setSeedEnabled);
   const references = useInputBarStore((s) => s.references);
   const editorHtml = useInputBarStore((s) => s.editorHtml);
   const firstFrame = useInputBarStore((s) => s.firstFrame);
@@ -118,6 +122,18 @@ export function InputBar() {
           >
             联网搜索
           </button>
+          <button
+            disabled
+            style={{
+              background: 'transparent',
+              border: '1px solid var(--color-border-card)',
+              borderRadius: 6, padding: '4px 12px', fontSize: 12,
+              color: '#3a3a4a', cursor: 'not-allowed', transition: 'all 0.15s',
+              opacity: 0.5,
+            }}
+          >
+            种子值
+          </button>
         </div>
 
         <div
diff --git a/web/src/components/VideoDetailModal.tsx b/web/src/components/VideoDetailModal.tsx
index b75e99c..f5043d7 100644
--- a/web/src/components/VideoDetailModal.tsx
+++ b/web/src/components/VideoDetailModal.tsx
@@ -532,6 +532,12 @@ export function VideoDetailModal({ task, onClose, onReEdit, onRegenerate, onDele
                   <span>¥{(task.costAmount ?? 0).toFixed(2)}</span>
                 </>
               )}
+              {(task.seed ?? -1) > 0 && (
+                <>
+                  <span className={styles.infoBarDot} />
+                  <span>种子值: {task.seed}</span>
+                </>
+              )}
             </div>
 
           </div>
diff --git a/web/src/components/VideoGenerationPage.tsx b/web/src/components/VideoGenerationPage.tsx
index f6f55d6..333e770 100644
--- a/web/src/components/VideoGenerationPage.tsx
+++ b/web/src/components/VideoGenerationPage.tsx
@@ -124,7 +124,7 @@ export function VideoGenerationPage() {
         <div className={styles.contentArea} ref={scrollRef} onScroll={handleScroll}>
           {tasks.length === 0 ? (
             <div className={styles.emptyArea}>
-              <p className={styles.emptyHint}>在下方输入提示词，开始创作 AI 视频</p>
+              <p className={styles.emptyHint}>Every frame was once just air.</p>
             </div>
           ) : (
             <div className={styles.taskList}>
diff --git a/web/src/lib/api.ts b/web/src/lib/api.ts
index 53a6cd6..bf4d1bd 100644
--- a/web/src/lib/api.ts
+++ b/web/src/lib/api.ts
@@ -136,6 +136,7 @@ export const videoApi = {
     duration: number;
     references: { url: string; type: string; role: string; label: string; thumb_url?: string }[];
     search_mode?: string;
+    seed?: number;
   }) =>
     api.post<{
       task_id: string;
diff --git a/web/src/store/generation.ts b/web/src/store/generation.ts
index d4158c9..d2aedfd 100644
--- a/web/src/store/generation.ts
+++ b/web/src/store/generation.ts
@@ -106,6 +106,7 @@ function backendToFrontend(bt: BackendTask): GenerationTask {
     tokensConsumed: bt.tokens_consumed || 0,
     costAmount: bt.cost_amount || 0,
     isFavorited: bt.is_favorited || false,
+    seed: bt.seed ?? -1,
   };
 }
 
@@ -168,6 +169,7 @@ function startPolling(taskId: string, frontendId: string) {
                   errorMessage: mapErrorMessage(data.error_message) || t.errorMessage,
                   tokensConsumed: data.tokens_consumed ?? t.tokensConsumed,
                   costAmount: data.cost_amount ?? t.costAmount,
+                  seed: data.seed ?? t.seed,
                 }
               : t
           ),
@@ -373,6 +375,7 @@ export const useGenerationStore = create<GenerationState>((set, get) => ({
       progress: 0,
       createdAt: Date.now(),
       isFavorited: false,
+      seed: input.seed ?? -1,
     };
 
     set((s) => ({ tasks: [...s.tasks, placeholderTask] }));
@@ -450,6 +453,7 @@ export const useGenerationStore = create<GenerationState>((set, get) => ({
         duration: input.duration,
         references: uploadedRefs,
         search_mode: input.searchMode || 'off',
+        seed: input.seed ?? -1,
       });
 
       // Update task with real backend IDs
@@ -552,6 +556,8 @@ export const useGenerationStore = create<GenerationState>((set, get) => ({
         label: r.label,
         tosUrl: r.previewUrl,
       }));
+      const taskSeed = task.seed ?? -1;
+      const currentSeedEnabled = useInputBarStore.getState().seedEnabled;
       useInputBarStore.setState({
         prompt: task.prompt,
         editorHtml: task.editorHtml || task.prompt,
@@ -559,6 +565,8 @@ export const useGenerationStore = create<GenerationState>((set, get) => ({
         duration: task.duration,
         references,
         assetMentions: task.assetMentions || [],
+        // 如果 seed 开关打开且 task 有有效 seed，填入；否则不动
+        ...(currentSeedEnabled && taskSeed > 0 ? { seed: taskSeed } : {}),
       });
     } else {
       // Keyframe mode: restore firstFrame and lastFrame
diff --git a/web/src/store/inputBar.ts b/web/src/store/inputBar.ts
index 354752f..20e8582 100644
--- a/web/src/store/inputBar.ts
+++ b/web/src/store/inputBar.ts
@@ -60,6 +60,12 @@ interface InputBarState {
   searchMode: 'smart' | 'off';
   setSearchMode: (mode: 'smart' | 'off') => void;
 
+  // Seed (种子值)
+  seed: number;
+  seedEnabled: boolean;
+  setSeed: (seed: number) => void;
+  setSeedEnabled: (enabled: boolean) => void;
+
   // Asset mentions (for reEdit/regenerate to pass asset data to PromptInput rebuild)
   assetMentions: { groupId: string; label: string; thumbUrl: string }[];
 
@@ -212,6 +218,11 @@ export const useInputBarStore = create<InputBarState>((set, get) => ({
   searchMode: 'off',
   setSearchMode: (searchMode) => set({ searchMode }),
 
+  seed: -1,
+  seedEnabled: false,
+  setSeed: (seed) => set({ seed }),
+  setSeedEnabled: (seedEnabled) => set({ seedEnabled, seed: -1 }),
+
   assetMentions: [],
 
   insertAtTrigger: 0,
diff --git a/web/src/types/index.ts b/web/src/types/index.ts
index dc58c50..3bb8aad 100644
--- a/web/src/types/index.ts
+++ b/web/src/types/index.ts
@@ -50,6 +50,7 @@ export interface GenerationTask {
   tokensConsumed?: number;
   costAmount?: number;
   isFavorited?: boolean;
+  seed?: number;
 }
 
 export interface BackendTask {
@@ -70,6 +71,7 @@ export interface BackendTask {
   error_message: string;
   reference_urls: { url: string; type: string; role: string; label: string }[];
   is_favorited: boolean;
+  seed: number;
   created_at: string;
 }