diff --git a/payment_backend/app.py b/payment_backend/app.py
index 48aa46c..94a0d1a 100644
--- a/payment_backend/app.py
+++ b/payment_backend/app.py
@@ -2,41 +2,46 @@ from flask import Flask, request, jsonify
 
 from config import get_config
 from services.order import OrderService
+from services.user import UserService
 
 config = get_config()
 
 app = Flask(__name__)
-order_service = OrderService()  # 获取单例实例
+order_service = OrderService()
+user_service = UserService()
+
 
 @app.route('/createOrder', methods=['POST'])
 def create_order():
     data = request.get_json()
+    name = data.get('name', None)
     phone = data.get('phone', None)
     email = data.get('email', None)
-    address = data.get('address', None)
-    try:
-        payment_method = data['paymentMethod']
-    except KeyError:
+    payment_method = data.get('payment_method', None)
+    if payment_method not in config['PaymentAddresses']:
         return jsonify({
             "message": "Unsupported payment method. Currently, only USDT payments are supported."
         }), 400
 
-    addresses = order_service.get_user_addresses(phone, email, address, payment_method)
+    address = data.get('address', None)
+    if address is None:
+        addresses = user_service.get_addresses(name, phone, email)
 
-    if not addresses:
-        return jsonify({
-            "message": "No payment address associated with you was found. Please provide a payment address."
-        }), 400
+        if not addresses:
+            return jsonify({
+                "message": "No payment address associated with you was found. Please provide a payment address."
+            }), 400
+        if len(addresses) > 1:
+            return jsonify({
+                "message": "Please select an address to place your order.",
+                "addresses": addresses
+            }), 200
+        # 单个地址
+        address = addresses[0]
 
-    if len(addresses) == 1:
-        order_id = order_service.create_order(addresses[0])
-        return jsonify({"order_id": order_id}), 200
+    order_id = order_service.create_order(address)
+    return jsonify({"order_id": order_id}), 200
 
-    # 多个地址的情况
-    return jsonify({
-        "message": "请选择一个地址进行下单。",
-        "addresses": addresses
-    }), 200
 
 if __name__ == '__main__':
     app.run(debug=True)
diff --git a/payment_backend/models.py b/payment_backend/models.py
index 1dd08ea..3686d81 100644
--- a/payment_backend/models.py
+++ b/payment_backend/models.py
@@ -35,11 +35,6 @@ class User:
             params = {}
         else:
             raise ValueError("format must be list or dict")
-        if self.uid:
-            if format == "list":
-                params.append(self.uid)
-            elif format == "dict":
-                params["uid"] = self.uid
         if self.name:
             if format == "list":
                 params.append(self.name)
@@ -69,8 +64,6 @@ class User:
 
     def get_difference(self, other_user):
         different_attrs = {}
-        if self.uid != other_user.uid:
-            different_attrs["uid"] = (self.uid, other_user.uid)
         if self.name != other_user.name:
             different_attrs["name"] = (self.name, other_user.name)
         if self.phone != other_user.phone:
diff --git a/payment_backend/services/order.py b/payment_backend/services/order.py
index 1272db4..6d8cade 100644
--- a/payment_backend/services/order.py
+++ b/payment_backend/services/order.py
@@ -3,7 +3,6 @@ import uuid
 from custom_decorators import singleton
 from models import User
 from repositories.order import OrderRepository
-from repositories.user import UserRepository
 from services.payment import PaymentService
 from utils.datetime import current, current_timestamp, is_time_difference_greater_than
 
@@ -14,16 +13,6 @@ class OrderService:
         self.config = config
         self.payment_service = PaymentService()
         self.order_repo = OrderRepository(config)
-        self.user_repo = UserRepository(config)
-
-    def get_user_addresses(self, phone=None, email=None, address=None, payment_method=None):
-        if address is None:
-            if phone or email:
-                users = self.user_repo.get_or_create(User(phone=phone, email=email))
-                addresses = set(user.address for user in users if address)
-                return list(addresses)
-            raise ValueError('A phone number, email, or address is required.')
-        return [address]
 
     def create_order(self, address=None):
         date_str = current().strftime('%Y%m%d%H%M%S')
diff --git a/payment_backend/services/user.py b/payment_backend/services/user.py
index 7fbae0d..b1e5501 100644
--- a/payment_backend/services/user.py
+++ b/payment_backend/services/user.py
@@ -1,6 +1,17 @@
 from custom_decorators import singleton
+from models import User
+from repositories.user import UserRepository
 
 
 @singleton
 class UserService:
-    pass
+    def __init__(self, config):
+        self.config = config
+        self.user_repo = UserRepository(config)
+
+    def get_addresses(self, name=None, phone=None, email=None):
+        if phone or email:
+            users = self.user_repo.get_or_create(User(name=name, phone=phone, email=email))
+            addresses = set(user.address for user in users if user.address)
+            return list(addresses)
+        raise ValueError('A phone number, email, or address is required.')