diff --git a/backend/app/core/coolbot_db.py b/backend/app/core/coolbot_db.py
new file mode 100644
index 0000000..a0b9014
--- /dev/null
+++ b/backend/app/core/coolbot_db.py
@@ -0,0 +1,37 @@
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.pool import QueuePool
+
+COOLBOT_DB_URL = os.getenv(
+    "COOLBOT_DB_URL",
+    "postgresql://coolbot:Coolbot123@pgm-bp1t1008h019ez6cno.pg.rds.aliyuncs.com:5432/coolbot_data"
+)
+
+coolbot_engine = create_engine(
+    COOLBOT_DB_URL,
+    poolclass=QueuePool,
+    pool_size=10,
+    max_overflow=20,
+    pool_timeout=30,
+    pool_recycle=1800,
+    pool_pre_ping=True,
+    echo=False,
+    connect_args={
+        "connect_timeout": 10,
+        "application_name": "zodiac-coolbot"
+    }
+)
+
+CoolbotSession = sessionmaker(autocommit=False, autoflush=False, bind=coolbot_engine)
+
+def get_coolbot_db():
+    """获取coolbot数据库会话"""
+    db = CoolbotSession()
+    try:
+        yield db
+    except Exception:
+        db.rollback()
+        raise
+    finally:
+        db.close()