diff --git a/beike/Shop/Services/TotalService.php b/beike/Shop/Services/TotalService.php
index 0772cb57..5d4ce1b9 100644
--- a/beike/Shop/Services/TotalService.php
+++ b/beike/Shop/Services/TotalService.php
@@ -114,7 +114,9 @@ class TotalService
      */
     private function getTotalClassMaps()
     {
-        $maps = [];
+        $maps = [
+            'sum_quantity' => "\Beike\\Shop\\Services\\TotalServices\\SumQuantityService"
+        ];
         foreach (self::TOTAL_CODES as $code) {
             $serviceName = Str::studly($code) . 'Service';
             $maps[$code] = "\Beike\\Shop\\Services\\TotalServices\\{$serviceName}";
diff --git a/beike/Shop/Services/TotalServices/ShippingService.php b/beike/Shop/Services/TotalServices/ShippingService.php
index 1df0b4a3..ccbc1d91 100644
--- a/beike/Shop/Services/TotalServices/ShippingService.php
+++ b/beike/Shop/Services/TotalServices/ShippingService.php
@@ -93,6 +93,7 @@ class ShippingService{
         if($logisticsId <= 0){
             // 获取当前收货地址国家ID
             $address = $cart->guest_shipping_address ?? $cart->guest_payment_address;
+            if(!$address) return [];
             $countryId = $address['country_id'];
             // 获取全部物流 返回第一个物流信息ID
             $logisticsList = Logistics::getAll($countryId,['type','first_weight','first_weight_fee','continuation_weight_max','add_weight','continuation_weight_fee','num_fee']);
diff --git a/beike/Shop/Services/TotalServices/SumQuantityService.php b/beike/Shop/Services/TotalServices/SumQuantityService.php
new file mode 100644
index 00000000..f5b7405a
--- /dev/null
+++ b/beike/Shop/Services/TotalServices/SumQuantityService.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace Beike\Shop\Services\TotalServices;
+
+use Beike\Shop\Services\CheckoutService;
+
+class SumQuantityService{
+
+    public static function getTotal(CheckoutService $checkout): ?array{
+        $totalService = $checkout->totalService;
+        $sumQuantity = $totalService->countProducts();
+        $totalData = [
+            'code'          => 'sum_quantity',
+            'title'         => trans('admin/dashboard.product_total'),
+            'amount'        => $sumQuantity,
+            'amount_format' => $sumQuantity,
+        ];
+        $totalService->totals[] = $totalData;
+
+        return $totalData;
+    }
+}
diff --git a/plugins/FlatShipping/Bootstrap.php b/plugins/FlatShipping/Bootstrap.php
index 21c5371b..235b1c80 100644
--- a/plugins/FlatShipping/Bootstrap.php
+++ b/plugins/FlatShipping/Bootstrap.php
@@ -53,13 +53,13 @@ class Bootstrap
         $amount        = $totalService->amount;
         $shippingType  = plugin_setting('flat_shipping.type', 'fixed');
         $shippingValue = plugin_setting('flat_shipping.value', 0);
-        if ($shippingType == 'fixed') {
-            return $shippingValue;
-        } elseif ($shippingType == 'percent') {
-            return $amount * $shippingValue / 100;
+        $sumQuantity = $totalService->countProducts();
+        if($sumQuantity > 0){
+            if ($shippingType == 'fixed') return $shippingValue;
+            elseif ($shippingType == 'percent') return $amount * $shippingValue / 100;
         }
 
-            return 0;
 
+        return 0;
     }
 }
diff --git a/themes/default/product/product.blade.php b/themes/default/product/product.blade.php
index 72b48520..112db3c8 100644
--- a/themes/default/product/product.blade.php
+++ b/themes/default/product/product.blade.php
@@ -239,7 +239,12 @@
           </div>
           {{-- 购买数量 - 单规格 --}}
           <div class="quantity-wrap mb-4" v-if="Object.keys(source.skus).length <= 1">
-            <input type="text" class="form-control" :disabled="!product.quantity" onkeyup="this.value=this.value.replace(/\D/g,'')" v-model="quantity" name="quantity">
+            <input type="text"
+                   class="form-control"
+                   :disabled="!product.quantity"
+                   :value="quantity"
+                   @input="singleQuantityChange($event)"
+                   name="quantity">
             <div class="right" v-if="!isNumSelect">
               <i class="bi bi-chevron-up"></i>
               <i class="bi bi-chevron-down"></i>
@@ -533,6 +538,7 @@
         quantity: function (newval, oldval) {
           let _this = this;
           let list = {};
+          // 请求计算运费
           list[0] = {
             product_id: _this.product_id,
             product_sku_id: this.product.id,
@@ -807,12 +813,22 @@
           let stock = _this.add_buy_sku[skuIndex].stock || 0;
           let quantity = event.target.value || 0;
           quantity = quantity > stock ? stock : quantity;// 不能超过库存
-          _this.add_buy_sku[skuIndex].quantity = quantity;
+          _this.add_buy_sku[skuIndex].quantity = typeof quantity != 'number' ? quantity.replace(/\D/g,'') : quantity;
           // 处理深度监听失败的问题
           _this.add_buy_sku = Object.assign({}, _this.add_buy_sku);
 
           _this.$forceUpdate();
         },
+        // 单规格 - 购买数量改变
+        singleQuantityChange(event){
+          let _this = this;
+          let stock = _this.product.quantity || 0;// 库存
+          let quantity = event.target.value || 0;// 购买数量
+          quantity = quantity > stock ? stock : quantity;// 不能超过库存
+          _this.quantity = typeof quantity != 'number' ? quantity.replace(/\D/g,'') : quantity;
+
+          _this.$forceUpdate();
+        },
         // 计算当前订单总额
         computeOrderMoney(list){
           let _this = this;
@@ -825,7 +841,7 @@
               _this.$forceUpdate();
             }
           })
-        }
+        },
 
       }
     });