diff --git a/backend/app/services/llm/enrichment.py b/backend/app/services/llm/enrichment.py
index 00192ac..39024d5 100644
--- a/backend/app/services/llm/enrichment.py
+++ b/backend/app/services/llm/enrichment.py
@@ -390,7 +390,7 @@ async def enrich_article(article_id: int) -> dict[str, str]:
 # === 后台循环 ===
 # 与 translation_loop 一样,常驻从队列里取文章
 ENRICHMENT_INTERVAL_SEC = 5.0  # 没活时等待
-ENRICHMENT_BATCH_SIZE = 1
+ENRICHMENT_BATCH_SIZE = 3  # 每轮并发拉取候选,然后顺序处理(LLM 客户端本身有节流)
 
 
 async def enrichment_loop() -> None:
@@ -405,6 +405,8 @@ async def enrichment_loop() -> None:
         try:
             async with AsyncSessionLocal() as session:
                 # 已翻译完成 + 4 个状态中至少有一个是 pending
+                # 关键:不能按 translated_at 升序 — 老文章已 enrich,新文章 translated_at=NULL(被排到最后)
+                # 改为按 id 升序(新文章 id 大),循环里再过滤 status
                 rows = (
                     await session.execute(
                         select(Article)
@@ -412,8 +414,8 @@ async def enrichment_loop() -> None:
                             Article.translation_status == "ok",
                             Article.title_zh.is_not(None),
                         )
-                        .order_by(Article.translated_at.asc().nullslast(), Article.id.asc())
-                        .limit(ENRICHMENT_BATCH_SIZE * 5)  # 多取几个找需要 enrich 的
+                        .order_by(Article.id.asc())
+                        .limit(ENRICHMENT_BATCH_SIZE * 20)  # 多取一些找需要 enrich 的
                     )
                 ).scalars()
                 candidates = list(rows)
@@ -441,7 +443,7 @@ async def enrichment_loop() -> None:
                     await enrich_article(aid)
                 except Exception as e:
                     logger.exception("enrich_article %s in loop failed: %s", aid, e)
-                await asyncio.sleep(0.5)  # 文章间轻节流
+                await asyncio.sleep(0.2)  # 文章间轻节流(LLM 内部还有 interval_sec)
         except Exception as e:
             logger.exception("enrichment_loop error: %s", e)
             await asyncio.sleep(ENRICHMENT_INTERVAL_SEC)