diff --git a/backend/database.py b/backend/database.py
index c84cd25..7b4c7e7 100644
--- a/backend/database.py
+++ b/backend/database.py
@@ -4,7 +4,13 @@ from models import Base
 import os
 
 # 数据库配置
-DATABASE_URL = os.getenv('DATABASE_URL', 'sqlite:///worklist.db')
+# 确保 data 目录存在
+DATA_DIR = os.path.join(os.path.dirname(os.path.dirname(__file__)), 'data')
+os.makedirs(DATA_DIR, exist_ok=True)
+
+# 数据库文件路径
+DB_PATH = os.path.join(DATA_DIR, 'worklist.db')
+DATABASE_URL = os.getenv('DATABASE_URL', f'sqlite:///{DB_PATH}')
 
 # 创建引擎
 engine = create_engine(
diff --git a/docker-compose.yml b/docker-compose.yml
index 3dc5a70..4f212d8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,10 +18,8 @@ services:
       - DEFAULT_USERNAME=${DEFAULT_USERNAME:-admin}
       - DEFAULT_PASSWORD=${DEFAULT_PASSWORD:-admin123}
     volumes:
-      # 持久化数据库
-      - worklist-data:/app/data
-      - worklist-instance:/app/backend/instance
+      # 持久化数据库 - 挂载到宿主机目录
+      - ./data:/app/data
 
 volumes:
-  worklist-data:
   worklist-instance: