diff --git a/app/common/repositories/store/order/StoreOrderRepository.php b/app/common/repositories/store/order/StoreOrderRepository.php
index d5632846..0fd7f9d7 100644
--- a/app/common/repositories/store/order/StoreOrderRepository.php
+++ b/app/common/repositories/store/order/StoreOrderRepository.php
@@ -1692,10 +1692,12 @@ class StoreOrderRepository extends BaseRepository
             }
             if ($order->pay_type == StoreGroupOrder::PAY_TYPE_CREDIT_BUY && $order->interest) {
                 $order->interest_start_time = $order->interest->start_time;
-                $days = ceil((time() - strtotime($order->interest->start_time)) / 86400);
-                $interestMoney = bcmul($order->interest->total_price, $order->interest->rate, 2);
-                $order->interest_money = bcmul($days, $interestMoney, 2);
                 $order->interest_status = $order->interest->status;
+                if ($order->interest_status == StoreOrderInterest::STATUS_SETTLED) {
+                    $order->interest_money = $order->interest->interest;
+                } else {
+                    $order->interest_money = $order->interest->calculateInterest();
+                }
             }
             $order->takeOrderCount = count($order['takeOrderList']);
             unset($order['takeOrderList'], $order->interest);
@@ -2471,6 +2473,7 @@ class StoreOrderRepository extends BaseRepository
             if ($result === true) {
                 $groupOrder->interest->status = StoreOrderInterest::STATUS_SETTLED;
                 $groupOrder->interest->settle_time = date('Y-m-d H:i:s');
+                $groupOrder->interest->interest = $interest;
                 $groupOrder->interest->save();
 
                 /** @var UserBillRepository $userBillRepository */