diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index d1b13f7..2490e21 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -13,7 +13,8 @@ services:
     volumes:
       # 数据卷保持不变，你的历史数据不会丢失！
       - ./pgdata_prod:/var/lib/postgresql/data
-
+    ports:
+      - "5432:5432"
   # --- 后端 (Flask) (保持不变) ---
   backend:
     build: