diff --git a/payment_backend/services/order.py b/payment_backend/services/order.py
index 34fd953..6599676 100644
--- a/payment_backend/services/order.py
+++ b/payment_backend/services/order.py
@@ -1,5 +1,7 @@
 import uuid
 
+from loguru import logger
+
 from custom_decorators import singleton
 from models import Order
 from repositories.order import OrderRepository
@@ -64,7 +66,7 @@ class OrderService:
         now = current_timestamp()
         quant, from_address, to_address, create_timestamp = self.order_repo.get_order_info(order_id)
         if is_time_difference_greater_than(create_timestamp, now, milliseconds=self.config.order.lifetime):
-            # 订单超时
+            logger.debug('Timed Out')
             status = 0
         else:
             correct_quant, confirmed = self.payment_service.check_payment(int(quant),
@@ -72,14 +74,16 @@ class OrderService:
                                                                           # 减去十秒, 避免网络延迟导致的订单创建时间太晚
                                                                           create_timestamp - 10000, now)
             if correct_quant and confirmed:
-                # 支付成功
+                logger.debug('Paid')
                 status = 1
             elif confirmed:
-                # 金额不对
+                logger.debug('Wrong Amount')
                 status = 3
             elif correct_quant:
-                # 支付尚未成功
+                logger.debug('Pending')
                 status = 4
+            else:
+                logger.debug('Unpaid')
         if status != 2:
             self.order_repo.update_status(order_id, status)
         return status
diff --git a/payment_backend/services/payment.py b/payment_backend/services/payment.py
index b5b2363..fa8db1b 100644
--- a/payment_backend/services/payment.py
+++ b/payment_backend/services/payment.py
@@ -1,4 +1,6 @@
 from api import Tronscan
+from loguru import logger
+
 from custom_decorators import singleton
 from utils.datetime import current_timestamp
 
@@ -17,9 +19,11 @@ class PaymentService:
                                                      from_address=from_address, to_address=to_address,
                                                      start_timestamp=order_create_timestamp, end_timestamp=end_timestamp)
         if result['rangeTotal'] == 0:
+            logger.debug('No payments found')
             return 0, 0
         token_transfers = result['token_transfers']
         token_transfer = token_transfers[-1]
         confirmed = token_transfer['confirmed']
         correct_quant = int(quant == (token_transfer['quant'] / 6))
+        logger.debug(f'correct_quant: {correct_quant}   confirmed: {confirmed}')
         return correct_quant, confirmed