diff --git a/API/back/app/__init__.py b/API/back/app/__init__.py
new file mode 100644
index 0000000..8c7ccec
--- /dev/null
+++ b/API/back/app/__init__.py
@@ -0,0 +1,15 @@
+from flask import Flask
+import os
+
+def create_app():
+    app = Flask(__name__, instance_relative_config=True)
+    # 加载默认配置
+    app.config.from_object('config')
+    # 加载实例配置（写在 .gitignore 中的 instance/config.py）
+    app.config.from_pyfile('config.py', silent=True)
+
+    # 注册蓝本或路由
+    from app.routes import main_bp
+    app.register_blueprint(main_bp)
+
+    return app
diff --git a/API/back/app/routes.py b/API/back/app/routes.py
new file mode 100644
index 0000000..c8fd028
--- /dev/null
+++ b/API/back/app/routes.py
@@ -0,0 +1,15 @@
+from flask import Blueprint, jsonify, current_app
+
+main_bp = Blueprint('main', __name__)
+
+@main_bp.route('/')
+def index():
+    return jsonify({"message": "Hello, Flask!"})
+
+@main_bp.route('/show-config')
+def show_config():
+    # 通过 current_app.config['KEY'] 或 get 方法访问配置项
+    return jsonify({
+        "DEBUG": current_app.config.get('DEBUG'),
+        "SECRET_KEY": current_app.config.get('SECRET_KEY')
+    })