diff --git a/src/shared/database/database.py b/src/shared/database/database.py
index 77028a9..8f7a959 100644
--- a/src/shared/database/database.py
+++ b/src/shared/database/database.py
@@ -53,16 +53,31 @@ class DatabaseManager:
             return
 
         try:
-            pool_cfg = _get_pool_config(role)
-            # 创建异步引擎
-            self.engine = create_async_engine(
-                database_url,
-                echo=settings.DEBUG,
-                pool_size=pool_cfg["pool_size"],
-                max_overflow=pool_cfg["max_overflow"],
-                pool_recycle=3600,
-                pool_pre_ping=True,  # 自动检测失效连接，避免 PG 断连报错
-            )
+            if role == "celery":
+                # Celery 场景必须用 NullPool：celery_tasks 经 asyncio.run 每任务
+                # 新建事件循环，而 asyncpg 连接绑定创建它的循环——QueuePool 会把
+                # 上一循环的连接缓存着流入新循环，报
+                # "got Future attached to a different loop"（任务全挂）且销毁时
+                # "Event loop is closed"。NullPool 不缓存：每次 checkout 在当前
+                # 循环新建连接、用完即关。局域网建连 ~1ms，对分钟级分析任务可忽略。
+                # （与 redis_task_manager 每任务 reconnect() 是同一循环绑定问题）
+                from sqlalchemy.pool import NullPool
+                self.engine = create_async_engine(
+                    database_url,
+                    echo=settings.DEBUG,
+                    poolclass=NullPool,
+                )
+            else:
+                pool_cfg = _get_pool_config(role)
+                # 创建异步引擎
+                self.engine = create_async_engine(
+                    database_url,
+                    echo=settings.DEBUG,
+                    pool_size=pool_cfg["pool_size"],
+                    max_overflow=pool_cfg["max_overflow"],
+                    pool_recycle=3600,
+                    pool_pre_ping=True,  # 自动检测失效连接，避免 PG 断连报错
+                )
             
             # 创建异步会话工厂
             self.async_session = async_sessionmaker(
@@ -76,10 +91,13 @@ class DatabaseManager:
                 await conn.execute(text("SELECT 1"))
             
             self.is_connected = True
-            logger.info(
-                "数据库连接成功 (pool_size=%d, max_overflow=%d)",
-                pool_cfg["pool_size"], pool_cfg["max_overflow"],
-            )
+            if role == "celery":
+                logger.info("数据库连接成功 (role=celery, pool=NullPool)")
+            else:
+                logger.info(
+                    "数据库连接成功 (role=%s, pool_size=%d, max_overflow=%d)",
+                    role, pool_cfg["pool_size"], pool_cfg["max_overflow"],
+                )
             
         except Exception as e:
             logger.error(f"数据库连接失败: {e}")