diff --git a/apps/worker/worker_app/tasks/viral_video.py b/apps/worker/worker_app/tasks/viral_video.py
index 35c68530f..f261717ba 100644
--- a/apps/worker/worker_app/tasks/viral_video.py
+++ b/apps/worker/worker_app/tasks/viral_video.py
@@ -331,20 +331,29 @@ def _vision_fallback(idx: int, reason: str, extra: dict | None = None) -> dict:
 
 
 def _is_vision_result_usable(result: dict) -> bool:
-    """判断 VLM 返回是否有效：name/summary 不能为未识别/无法判断/空，summary 要够长。"""
+    """判断 VLM 返回是否有效。
+    #2198b: 判定条件放宽——有人像(portrait_prompt非空/非'无人像')即视为usable（爆款视频核心
+    是要人物描述给信任链t2i用，product name/brand/features识别不准是次要的）。
+    非人像场景才要求name+summary+features有效。
+    """
     if not isinstance(result, dict):
         return False
+    # 有人像描述（爆款视频最核心需求，portrait_prompt给信任链t2i做参考）就视为usable
+    pp = (result.get("portrait_prompt") or "").strip()
+    if pp and pp not in ("无人像", "无法判断", "未识别"):
+        return True
+    # 非人像场景：要求name+summary有效
     name = (result.get("name") or "").strip()
     if not name or name in ("未识别", "无法判断", "未知"):
         return False
     summary = (result.get("summary") or "").strip()
-    if len(summary) < 30 or summary in ("无法判断", "未识别"):
+    if len(summary) < 5 or summary in ("无法判断", "未识别"):
         return False
     category = (result.get("category") or "").strip()
     if category == "非产品图":
         return True
     feats = result.get("key_features") or []
-    if not isinstance(feats, list) or len(feats) == 0:
+    if not isinstance(feats, list) or len(feats) == 0 or feats == ["无法判断"]:
         return False
     return True