diff --git a/backend/app/api/controller/v1/order/CenterOrderController.php b/backend/app/api/controller/v1/order/CenterOrderController.php
index 3da0d1c61..396b0b2f0 100644
--- a/backend/app/api/controller/v1/order/CenterOrderController.php
+++ b/backend/app/api/controller/v1/order/CenterOrderController.php
@@ -1403,11 +1403,14 @@ class CenterOrderController
 
             // 自提模式强制运费为 0；上门服务模式运费替换为商品上门费用（同上 computed 方法的处理逻辑）
             $finalPayPostage = $computedResult['pay_postage'] ?? 0;
+            // 会员运费优惠：pay_postage 为优惠后运费，详情页需还原原运费并单独展示优惠
+            $finalPostageDiscount = (string)($computedResult['storePostageDiscount'] ?? '0.00');
             if ($formDeliveryType === 'pickup') {
                 if ($finalPayPostage > 0) {
                     $finalPayPrice = bcsub((string)$finalPayPrice, (string)$finalPayPostage, 2);
                 }
                 $finalPayPostage = 0;
+                $finalPostageDiscount = '0.00';
             } elseif ($formDeliveryType === 'door') {
                 // 上门服务：运费 = 商品上门费用（实时从数据库读取，避免缓存快照过期导致金额不一致）
                 $doorPostage = 0.00;
@@ -1429,6 +1432,7 @@ class CenterOrderController
                 }
                 $finalPayPrice = bcadd((string)$finalPayPrice, (string)$doorPostage, 2);
                 $finalPayPostage = $doorPostage;
+                $finalPostageDiscount = '0.00';
             }
 
             // 5. 先写产品类型扩展表，拿到扩展表记录 id 作为中台表的 source_id
@@ -1633,7 +1637,8 @@ class CenterOrderController
                     'delivery'              => [
                         'delivery_type' => $deliveryType,
                     ],
-                    // 金额字段已提升为实体列，extra_info 中不再双写
+                    // 金额字段已提升为实体列；运费优惠需保留供详情页还原原运费
+                    'postage_discount'      => $finalPostageDiscount,
                     'sku_info'              => $this->buildSkuInfoForExtra($cartInfo[0] ?? []),
                     // 商品明细快照，供订单详情/退款页面使用
                     'items'                 => $this->buildOrderItemsForExtra($cartInfo),
diff --git a/backend/app/services/order/OrderCenterServices.php b/backend/app/services/order/OrderCenterServices.php
index b15d0c2f4..5688860f7 100644
--- a/backend/app/services/order/OrderCenterServices.php
+++ b/backend/app/services/order/OrderCenterServices.php
@@ -680,15 +680,29 @@ class OrderCenterServices extends BaseService implements OrderCenterSyncInterfac
             'type'  => 'subtotal',
         ];
 
-        // 运费（>0 才显示）
+        // 快递运费：展示优惠前金额（pay_postage 为会员运费优惠后的实付运费）
         $postage = (float)($detail['pay_postage'] ?? 0);
-        if ($postage > 0) {
+        $extraInfo = $detail['extra_info'] ?? [];
+        if (!is_array($extraInfo)) {
+            $extraInfo = [];
+        }
+        $postageDiscount = (float)($extraInfo['postage_discount'] ?? 0);
+        $originalPostage = (float)bcadd((string)$postage, (string)$postageDiscount, 2);
+        if ($originalPostage > 0) {
             $items[] = [
-                'label' => '运费',
-                'value' => '+' . number_format($postage, 2, '.', ''),
+                'label' => '快递运费',
+                'value' => '+' . number_format($originalPostage, 2, '.', ''),
                 'type'  => 'shipping',
             ];
         }
+        // 会员运费优惠单独展示，与订单确认页口径一致
+        if ($postageDiscount > 0) {
+            $items[] = [
+                'label' => '会员运费优惠',
+                'value' => '-' . number_format($postageDiscount, 2, '.', ''),
+                'type'  => 'shipping_discount',
+            ];
+        }
         // 优惠券抵扣
         if (!empty($detail['coupon_price']) && (float)$detail['coupon_price'] > 0) {
             $items[] = [
diff --git a/backend/modules/product/normal/service/OrderCreateServices.php b/backend/modules/product/normal/service/OrderCreateServices.php
index a0c8ceb2f..2afb9c398 100644
--- a/backend/modules/product/normal/service/OrderCreateServices.php
+++ b/backend/modules/product/normal/service/OrderCreateServices.php
@@ -177,7 +177,8 @@ class OrderCreateServices extends BaseService
                     'delivery'              => [
                         'delivery_type' => $shippingType === 2 ? 'pickup' : ($shippingType === 3 ? 'door' : 'express'),
                     ],
-                    // 金额字段已提升为实体列，extra_info 中不再双写
+                    // 金额字段已提升为实体列；运费优惠需保留原始运费与优惠额供订单详情展示
+                    'postage_discount'      => (string)($priceData['postage_discount'] ?? '0.00'),
                     // 商品规格快照，供订单列表/详情页展示
                     'sku_info'              => $this->buildSkuInfo($cartGroup['cartInfo'][0] ?? []),
                     // v8.1.1 商品级售后：写入 items 快照（含 cart_id），供售后引擎加载商品列表
@@ -336,6 +337,8 @@ class OrderCreateServices extends BaseService
             'pay_price'        => $priceData['pay_price'] ?? 0,
             'coupon_price'     => $priceData['coupon_price'] ?? 0,
             'pay_postage'      => $priceData['pay_postage'] ?? 0,
+            // 会员运费优惠：pay_postage 是优惠后运费，需单独落库供详情页展示原运费与优惠
+            'postage_discount' => $priceData['storePostageDiscount'] ?? 0,
             'deduction_price'  => $priceData['deduction_price'] ?? 0,
             'usedIntegral'     => $priceData['usedIntegral'] ?? 0,
         ];