diff --git a/video-gen-api/app/services/private_portrait/reference_resolver.py b/video-gen-api/app/services/private_portrait/reference_resolver.py
index 7d55b879..3e8573fc 100644
--- a/video-gen-api/app/services/private_portrait/reference_resolver.py
+++ b/video-gen-api/app/services/private_portrait/reference_resolver.py
@@ -7,13 +7,31 @@ from fastapi import HTTPException
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from app.enums.private_portrait import PRIVATE_PORTRAIT_ASSET_URI_PREFIX, PrivatePortraitAssetStatus, PrivatePortraitEventSource, PrivatePortraitEventStatus, PrivatePortraitEventType, PrivatePortraitReferenceSource
+from app.enums.private_portrait import (
+    PRIVATE_PORTRAIT_ASSET_URI_PREFIX,
+    PrivatePortraitAssetStatus,
+    PrivatePortraitAssetType,
+    PrivatePortraitEventSource,
+    PrivatePortraitEventStatus,
+    PrivatePortraitEventType,
+    PrivatePortraitReferenceSource,
+)
 from app.models.private_portrait import PrivatePortraitAsset
-from app.services.operation_log_service import log_operation_event
+from app.services.operation_log_service import log_operation_error, log_operation_event
 
 DOMAIN = "private_portrait"
 
 
+_ASSET_TYPE_TO_REFERENCE_TYPE = {
+    PrivatePortraitAssetType.IMAGE.value: "image",
+    PrivatePortraitAssetType.VIDEO.value: "video",
+    PrivatePortraitAssetType.AUDIO.value: "audio",
+}
+
+
+_SUPPORTED_GEN_TYPES = {"image", "video"}
+
+
 def _ref_get(ref: Any, key: str) -> Any:
     if isinstance(ref, dict):
         return ref.get(key)
@@ -27,33 +45,109 @@ def _ref_set(ref: Any, key: str, value: Any) -> None:
         setattr(ref, key, value)
 
 
-async def resolve_private_portrait_references(db: AsyncSession, *, user_id: str, media_references: list[Any] | None) -> list[Any] | None:
+def _normalize_gen_type(gen_type: str | None) -> str | None:
+    value = (gen_type or "").strip().lower()
+    if not value:
+        return None
+    if value not in _SUPPORTED_GEN_TYPES:
+        raise HTTPException(status_code=400, detail="gen_type 仅支持 image 或 video")
+    return value
+
+
+def _normalize_ref_type(value: Any) -> str:
+    return str(value or "").strip().lower()
+
+
+async def resolve_private_portrait_references(
+    db: AsyncSession,
+    *,
+    user_id: str,
+    media_references: list[Any] | None,
+    gen_type: str | None = None,
+) -> list[Any] | None:
+    """Resolve private portrait references before dispatching a generation task.
+
+    generation_ai_service.py 和 generation_task_factory_service.py 都会传 gen_type。
+    这里保留该参数用于兼容调用方，并做基础校验，避免接口因函数签名不一致直接 500。
+    """
+    normalized_gen_type = _normalize_gen_type(gen_type)
     if not media_references:
         return media_references
+
     refs = deepcopy(media_references)
-    ids = [str(_ref_get(ref, "private_asset_id")) for ref in refs if _ref_get(ref, "source") == PrivatePortraitReferenceSource.PRIVATE_PORTRAIT_ASSET.value and _ref_get(ref, "private_asset_id")]
+    ids = [
+        str(_ref_get(ref, "private_asset_id"))
+        for ref in refs
+        if _ref_get(ref, "source") == PrivatePortraitReferenceSource.PRIVATE_PORTRAIT_ASSET.value
+        and _ref_get(ref, "private_asset_id")
+    ]
     ids = list(dict.fromkeys(ids))
     if not ids:
         return refs
-    log_operation_event(domain=DOMAIN, event_type=PrivatePortraitEventType.REFERENCE_RESOLVE_START.value, event_status=PrivatePortraitEventStatus.PENDING.value, source=PrivatePortraitEventSource.SERVICE.value, user_id=user_id, detail={"private_asset_ids": ids})
-    rows = await db.execute(select(PrivatePortraitAsset).where(PrivatePortraitAsset.id.in_(ids)))
-    asset_map = {asset.id: asset for asset in rows.scalars().all()}
-    for ref in refs:
-        if _ref_get(ref, "source") != PrivatePortraitReferenceSource.PRIVATE_PORTRAIT_ASSET.value:
-            continue
-        asset_id = str(_ref_get(ref, "private_asset_id") or "")
-        asset = asset_map.get(asset_id)
-        if not asset:
-            raise HTTPException(status_code=400, detail="真人素材不存在")
-        if asset.user_id != user_id:
-            raise HTTPException(status_code=403, detail="真人素材不属于当前用户")
-        if asset.deleted_at is not None:
-            raise HTTPException(status_code=400, detail="真人素材已删除")
-        if asset.status != PrivatePortraitAssetStatus.ACTIVE.value:
-            raise HTTPException(status_code=400, detail=f"真人素材状态为 {asset.status}，Active 后才可用于生成")
-        if not asset.remote_asset_id:
-            raise HTTPException(status_code=400, detail="真人素材缺少远程 AssetId")
-        _ref_set(ref, "remote_asset_id", asset.remote_asset_id)
-        _ref_set(ref, "url", f"{PRIVATE_PORTRAIT_ASSET_URI_PREFIX}{asset.remote_asset_id}")
-    log_operation_event(domain=DOMAIN, event_type=PrivatePortraitEventType.REFERENCE_RESOLVE_SUCCESS.value, event_status=PrivatePortraitEventStatus.SUCCESS.value, source=PrivatePortraitEventSource.SERVICE.value, user_id=user_id, detail={"count": len(ids)})
-    return refs
+
+    log_operation_event(
+        domain=DOMAIN,
+        event_type=PrivatePortraitEventType.REFERENCE_RESOLVE_START.value,
+        event_status=PrivatePortraitEventStatus.PENDING.value,
+        source=PrivatePortraitEventSource.SERVICE.value,
+        user_id=user_id,
+        detail={"private_asset_ids": ids, "gen_type": normalized_gen_type},
+    )
+
+    try:
+        rows = await db.execute(select(PrivatePortraitAsset).where(PrivatePortraitAsset.id.in_(ids)))
+        asset_map = {asset.id: asset for asset in rows.scalars().all()}
+
+        for ref in refs:
+            if _ref_get(ref, "source") != PrivatePortraitReferenceSource.PRIVATE_PORTRAIT_ASSET.value:
+                continue
+
+            asset_id = str(_ref_get(ref, "private_asset_id") or "")
+            if not asset_id:
+                raise HTTPException(status_code=400, detail="真人素材引用缺少 private_asset_id")
+
+            asset = asset_map.get(asset_id)
+            if not asset:
+                raise HTTPException(status_code=400, detail="真人素材不存在")
+            if asset.user_id != user_id:
+                raise HTTPException(status_code=403, detail="真人素材不属于当前用户")
+            if asset.deleted_at is not None:
+                raise HTTPException(status_code=400, detail="真人素材已删除")
+            if asset.status != PrivatePortraitAssetStatus.ACTIVE.value:
+                raise HTTPException(status_code=400, detail=f"真人素材状态为 {asset.status}，Active 后才可用于生成")
+            if not asset.remote_asset_id:
+                raise HTTPException(status_code=400, detail="真人素材缺少远程 AssetId")
+
+            expected_ref_type = _ASSET_TYPE_TO_REFERENCE_TYPE.get(asset.asset_type)
+            ref_type = _normalize_ref_type(_ref_get(ref, "type"))
+            if expected_ref_type and ref_type and ref_type != expected_ref_type:
+                raise HTTPException(status_code=400, detail=f"真人素材类型不匹配：引用为 {ref_type}，素材为 {expected_ref_type}")
+
+            _ref_set(ref, "source", PrivatePortraitReferenceSource.PRIVATE_PORTRAIT_ASSET.value)
+            _ref_set(ref, "private_asset_id", asset.id)
+            _ref_set(ref, "remote_asset_id", asset.remote_asset_id)
+            _ref_set(ref, "url", f"{PRIVATE_PORTRAIT_ASSET_URI_PREFIX}{asset.remote_asset_id}")
+            if expected_ref_type:
+                _ref_set(ref, "type", expected_ref_type)
+            if not _ref_get(ref, "name") and asset.name:
+                _ref_set(ref, "name", asset.name)
+
+        log_operation_event(
+            domain=DOMAIN,
+            event_type=PrivatePortraitEventType.REFERENCE_RESOLVE_SUCCESS.value,
+            event_status=PrivatePortraitEventStatus.SUCCESS.value,
+            source=PrivatePortraitEventSource.SERVICE.value,
+            user_id=user_id,
+            detail={"count": len(ids), "gen_type": normalized_gen_type},
+        )
+        return refs
+    except Exception as exc:
+        log_operation_error(
+            domain=DOMAIN,
+            event_type=PrivatePortraitEventType.REFERENCE_RESOLVE_FAILED.value,
+            source=PrivatePortraitEventSource.SERVICE.value,
+            user_id=user_id,
+            detail={"private_asset_ids": ids, "gen_type": normalized_gen_type},
+            exc=exc,
+        )
+        raise