diff --git a/stac-fastapi-pgstac/docker-compose.yml b/stac-fastapi-pgstac/docker-compose.yml
index d417df9..0b3cbe9 100644
--- a/stac-fastapi-pgstac/docker-compose.yml
+++ b/stac-fastapi-pgstac/docker-compose.yml
@@ -14,6 +14,8 @@ services:
     ports:
       - "5439:5432"
     command: postgres -N 500
+    volumes:
+      - ./pgdata:/var/lib/postgresql/data  # ✅ 数据持久化路径
 
   app:
     container_name: stac-fastapi-pgstac