diff --git a/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts b/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts
index 736181ed1..e297b4626 100755
--- a/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts
+++ b/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts
@@ -69,7 +69,8 @@ export function useSmartMatch({
 
       // 调用后端智能匹配 API（后端也会排除已用尽素材，这里前端兜底过滤）
       const result = await smartMatchAssets(libraryId, limit)
-      const matched = (result.items ?? []).filter(isAssetUsable)
+      // 兜底过滤：id 为空或不可用的素材不参与匹配（smartMatchAssets 已做归一化，这里双保险）
+      const matched = (result.items ?? []).filter((a) => !!a?.id && isAssetUsable(a))
       const matchedIds = matched.map((a: AssetItem) => a.id)
 
       if (matchedIds.length > 0) {