diff --git a/app/common.php b/app/common.php
index 80f2a2d..e0af625 100644
--- a/app/common.php
+++ b/app/common.php
@@ -1398,8 +1398,14 @@ if (!function_exists('getTimeStamp')) {
         return [$startTime,$endTime];
     }
 }
-
-
+// 获取指定两个数之间的随机数，保留两位小数
+if (!function_exists('getRandom')) {
+    function getRandom($minNum, $maxNum){
+        $rand = $minNum + mt_rand() / mt_getrandmax() * ($maxNum - $minNum);
+
+        return floatval(number_format($rand,2));
+    }
+}
 
 
 
diff --git a/app/common/repositories/store/order/StoreOrderCreateRepository.php b/app/common/repositories/store/order/StoreOrderCreateRepository.php
index b6f0381..1422ea2 100644
--- a/app/common/repositories/store/order/StoreOrderCreateRepository.php
+++ b/app/common/repositories/store/order/StoreOrderCreateRepository.php
@@ -724,6 +724,7 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
         $orderTotalWineDiffMoney = 0;// 订单总差价
         $orderTotalWineDiffMoneyPrice = 0;// 订单总补差价支付金额
 
+        $orderTotalRandomReduction = 0;// 订单总随机立减金额
 
         foreach($merchantCartList as &$merchantCart){
             $merchantCart['take'] = [
@@ -755,6 +756,8 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
             $orderWineDiffMoney = 0;// 当前订单差价
             $orderWineDiffMoneyPrice = 0;// 当前订单补差价支付金额
 
+            $orderRandomReduction = 0;//当前订单随机立减金额
+
             //计算积分抵扣
             foreach($merchantCart['list'] as &$cart){
                 //只有普通商品可以抵扣
@@ -826,6 +829,22 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
                     $orderWineIntegral       = bcadd($orderWineIntegral,$deductionAmount,2);
                     $orderWineIntegralPrice = bcadd($orderWineIntegralPrice,$deductionAmount,2);
                 }
+                // 计算随机立减 仅普通商品有效
+                if($cart['product_type'] == 0 && $cart['true_price'] > 0){
+                    // 随机立减
+                    $systemConfig = systemConfig(['random_reduction_min','random_reduction_max']);
+                    $minNum = $systemConfig['random_reduction_min'] ?? 0.1;
+                    $maxNum = $systemConfig['random_reduction_max'] ?? 5;
+                    // 判断：如果最大立减金额 大于剩余支付金额；则最大立减金额=剩余支付金额，否则不变
+                    $maxNum = $maxNum > $cart['true_price'] ? $cart['true_price'] : $maxNum;
+                    $randomReduction = getRandom($minNum, $maxNum);
+
+                    $cart['random_reduction'] = $randomReduction;
+                    $cart['true_price'] = bcsub($cart['true_price'],$randomReduction,2);;
+                    $merchantCart['order']['true_price'] = bcsub($merchantCart['order']['true_price'], $randomReduction,2);
+
+                    $orderRandomReduction       = bcadd($orderRandomReduction,$randomReduction,2);
+                }
             }
             unset($cart);
             $order_total_integral       = bcadd($order_total_integral,$total_integral,0);
@@ -836,6 +855,8 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
             $orderTotalWineIntegral       = bcadd($orderTotalWineIntegral,$orderWineIntegral,2);
             $orderTotalWineIntegralPrice = bcadd($orderTotalWineIntegralPrice,$orderWineIntegralPrice,2);
 
+            $orderTotalRandomReduction = bcadd($orderTotalRandomReduction,$orderRandomReduction,2);
+
             $orderTotalWineDiffMoney       = bcadd($orderTotalWineDiffMoney,$orderWineDiffMoney,2);
             $orderTotalWineDiffMoneyPrice = bcadd($orderTotalWineDiffMoneyPrice,$orderWineDiffMoneyPrice,2);
 
@@ -888,9 +909,19 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
             $merchantCart['order']['org_price']            = $org_price;
             $merchantCart['order']['pay_price']            = $pay_price;
             $merchantCart['order']['coupon_price']         = $coupon_price;
+
+            $merchantCart['order']['random_reduction'] = $orderRandomReduction;
+
             $order_price       = bcadd($order_price,$pay_price,2);
             $order_total_price = bcadd($order_total_price,$total_price,2);
         }
+
+
+        // 随机立减 - 减少订单总金额
+        // $order_price       = (float)sprintf("%.2f",$order_price - $orderTotalRandomReduction);
+        // $order_total_price = (float)sprintf("%.2f",$order_total_price - $orderTotalRandomReduction);
+
+
         unset($merchantCart);
         if($order_model){
             $allow_no_address = FALSE;
@@ -910,6 +941,8 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
         $openIntegral = $merIntegralFlag && !$order_type && $sysIntegralConfig['integral_status'] && $sysIntegralConfig['integral_money'] > 0;
 
 
+
+
         $integralDeductionAmount = bcadd($order_total_integral_price,$orderTotalWineIntegralPrice,2);
         $total_coupon = bcadd($order_svip_discount,bcadd(bcadd($total_platform_coupon_price,$order_coupon_price,2),$integralDeductionAmount,2),2);
 
@@ -935,6 +968,7 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
             'orderTotalWineDiffMoney',
             'orderTotalWineDiffMoneyPrice',
 
+            'orderTotalRandomReduction',
 
             'order_total_give_integral',
             'order_svip_discount',
@@ -1151,6 +1185,8 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
                 'wine_diff_money'         => $merchantCart['order']['wine_diff_money'] ?? 0,
                 'wine_diff_money_price'   => $merchantCart['order']['wine_diff_money_price'] ?? 0,
                 'point_id'   => $merchantCart['take']['id'] ?? 0,
+                // 随机立减金额
+                'random_reduction'   => $merchantCart['order']['random_reduction'] ?? 0,
             ];
 
             $allUseCoupon = array_merge($allUseCoupon,$merchantCart['order']['useCouponIds']);
@@ -1186,6 +1222,8 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
             'exchange_integral'       => $orderInfo['orderTotalWineIntegral'] ?? 0,
             'wine_diff_money'         => $orderInfo['orderTotalWineDiffMoney'] ?? 0,
             'wine_diff_money_price'   => $orderInfo['orderTotalWineDiffMoneyPrice'] ?? 0,
+            // 随机立减金额
+            'random_reduction'   => $orderInfo['orderTotalRandomReduction'] ?? 0,
         ];
 
         event('order.create.before',compact('groupOrder','orderList'));
@@ -1452,6 +1490,8 @@ class StoreOrderCreateRepository extends StoreOrderRepository{
                         // 特殊商品 代理及省公司门店，供应商提成处理
                         'province_here_id'   => $cart['province_here_id'] ?? 0,
                         'province_send_id'   => $cart['province_send_id'] ?? 0,
+                        // 随机立减金额
+                        'random_reduction'   => $cart['random_reduction'] ?? 0,
                     ];
                 }
                 $userMerchantRepository->getInfo($uid,$order['mer_id']);