diff --git a/backend/services/trading-service/src/application/services/c2c.service.ts b/backend/services/trading-service/src/application/services/c2c.service.ts
index af0c0773..9f3efd84 100644
--- a/backend/services/trading-service/src/application/services/c2c.service.ts
+++ b/backend/services/trading-service/src/application/services/c2c.service.ts
@@ -318,12 +318,17 @@ export class C2cService {
         paymentDeadline,
       };
 
-      // 如果是买单，接单方提供收款信息
+      // 如果是买单，接单方（卖方）提供收款信息
       if (order.type === C2C_ORDER_TYPE.BUY) {
         updateData.paymentMethod = options?.paymentMethod;
         updateData.paymentAccount = options?.paymentAccount;
         updateData.paymentQrCode = options?.paymentQrCode;
         updateData.paymentRealName = options?.paymentRealName;
+        // 获取卖方（taker）Kava 地址，买方需要用它来转绿积分
+        const takerKavaAddress = await this.identityClient.getUserKavaAddress(takerAccountSequence);
+        if (takerKavaAddress) {
+          updateData.sellerKavaAddress = takerKavaAddress;
+        }
       }
 
       const updatedOrder = await this.c2cOrderRepository.updateStatus(orderNo, C2C_ORDER_STATUS.MATCHED as any, updateData);
diff --git a/frontend/mining-app/lib/data/models/c2c_order_model.dart b/frontend/mining-app/lib/data/models/c2c_order_model.dart
index 8d96d4b6..1d8a9c4f 100644
--- a/frontend/mining-app/lib/data/models/c2c_order_model.dart
+++ b/frontend/mining-app/lib/data/models/c2c_order_model.dart
@@ -16,9 +16,10 @@ enum C2cOrderStatus {
 
 /// C2C收款方式
 enum C2cPaymentMethod {
-  alipay,  // 支付宝
-  wechat,  // 微信
-  bank,    // 银行卡
+  greenPoints, // 绿积分
+  alipay,      // 支付宝
+  wechat,      // 微信
+  bank,        // 银行卡
 }
 
 /// C2C订单模型
@@ -164,7 +165,11 @@ class C2cOrderModel {
 
   static C2cPaymentMethod? _parsePaymentMethod(String? method) {
     if (method == null) return null;
-    switch (method.toUpperCase()) {
+    // 支持逗号分隔的多种支付方式（如 "GREEN_POINTS,ALIPAY"），取第一个作为主要方式
+    final primary = method.split(',').first.trim().toUpperCase();
+    switch (primary) {
+      case 'GREEN_POINTS':
+        return C2cPaymentMethod.greenPoints;
       case 'ALIPAY':
         return C2cPaymentMethod.alipay;
       case 'WECHAT':
@@ -209,6 +214,8 @@ class C2cOrderModel {
   /// 收款方式文本
   String get paymentMethodText {
     switch (paymentMethod) {
+      case C2cPaymentMethod.greenPoints:
+        return '绿积分';
       case C2cPaymentMethod.alipay:
         return '支付宝';
       case C2cPaymentMethod.wechat:
diff --git a/frontend/mining-app/lib/presentation/pages/c2c/c2c_order_detail_page.dart b/frontend/mining-app/lib/presentation/pages/c2c/c2c_order_detail_page.dart
index b54f0a07..26fc9bf6 100644
--- a/frontend/mining-app/lib/presentation/pages/c2c/c2c_order_detail_page.dart
+++ b/frontend/mining-app/lib/presentation/pages/c2c/c2c_order_detail_page.dart
@@ -403,6 +403,14 @@ class _C2cOrderDetailPageState extends ConsumerState<C2cOrderDetailPage> {
               value: order.paymentRealName!,
             ),
 
+          // 卖家 Kava 地址（绿积分转账目标地址）
+          if (order.sellerKavaAddress != null && isBuyer)
+            _buildPaymentInfoRow(
+              label: 'Kava 地址',
+              value: order.sellerKavaAddress!,
+              canCopy: true,
+            ),
+
           // 付款金额
           const SizedBox(height: 12),
           Container(
@@ -660,6 +668,8 @@ class _C2cOrderDetailPageState extends ConsumerState<C2cOrderDetailPage> {
 
   IconData _getPaymentIcon(C2cPaymentMethod? method) {
     switch (method) {
+      case C2cPaymentMethod.greenPoints:
+        return Icons.eco;
       case C2cPaymentMethod.alipay:
         return Icons.account_balance_wallet;
       case C2cPaymentMethod.wechat: