diff --git a/DatabaseApp.py b/DatabaseApp.py
new file mode 100644
index 0000000..642ba5d
--- /dev/null
+++ b/DatabaseApp.py
@@ -0,0 +1,55 @@
+from flask import Flask, jsonify, request
+
+app = Flask(__name__)
+
+# 模拟数据库，存储用户信息
+users = []
+
+
+# 查看所有用户信息
+@app.route('/users', methods=['GET'])
+def get_users():
+    return jsonify(users)
+
+
+# 查看单个用户信息
+@app.route('/users/<int:user_id>', methods=['GET'])
+def get_user(user_id):
+    for user in users:
+        if user['id'] == user_id:
+            return jsonify(user)
+    return jsonify({'message': 'User not found'}), 404
+
+
+# 添加用户
+@app.route('/users', methods=['POST'])
+def add_user():
+    new_user = request.get_json()
+    new_user['id'] = len(users) + 1
+    users.append(new_user)
+    return jsonify(new_user), 201
+
+
+# 修改用户信息
+@app.route('/users/<int:user_id>', methods=['PUT'])
+def update_user(user_id):
+    updated_user = request.get_json()
+    for i, user in enumerate(users):
+        if user['id'] == user_id:
+            users[i].update(updated_user)
+            return jsonify(users[i])
+    return jsonify({'message': 'User not found'}), 404
+
+
+# 删除用户信息
+@app.route('/users/<int:user_id>', methods=['DELETE'])
+def delete_user(user_id):
+    for i, user in enumerate(users):
+        if user['id'] == user_id:
+            del users[i]
+            return jsonify({'message': 'User deleted'})
+    return jsonify({'message': 'User not found'}), 404
+
+
+if __name__ == '__main__':
+    app.run(debug=True)
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