diff --git a/apps/web/src/pages/generate/hooks/useStep4Preview.ts b/apps/web/src/pages/generate/hooks/useStep4Preview.ts
index 4460035b4..45d312720 100644
--- a/apps/web/src/pages/generate/hooks/useStep4Preview.ts
+++ b/apps/web/src/pages/generate/hooks/useStep4Preview.ts
@@ -35,6 +35,8 @@ interface UseStep4PreviewProps {
   videoRatio: string
   /** 配音 voice_ids（传给后端，让预览包含配音音频） */
   voiceIds?: string[]
+  /** 配音素材库ID（用户选择的上传音频或AI配音素材） */
+  voiceLibraryId?: string
   /** 要生成的预览数量 */
   previewCount?: number
 }
@@ -84,6 +86,7 @@ export function useStep4Preview({
   duration,
   videoRatio,
   voiceIds,
+  voiceLibraryId,
   previewCount = 1,
 }: UseStep4PreviewProps) {
   const templateName = useMemo(
@@ -332,6 +335,7 @@ export function useStep4Preview({
           duration: duration || undefined,
           video_ratio: videoRatio,
           voice_ids: voiceIds && voiceIds.length > 0 ? voiceIds : undefined,
+          voice_library_id: voiceLibraryId || undefined,
         })
 
         if (startTimeRef.current === 0) return