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 07e286d7..af0c0773 100644
--- a/backend/services/trading-service/src/application/services/c2c.service.ts
+++ b/backend/services/trading-service/src/application/services/c2c.service.ts
@@ -118,11 +118,13 @@ export class C2cService {
         throw new BadRequestException('最小交易数量为1');
       }
 
-      // 卖单：尝试获取卖家 Kava 地址（非必需，C2C交易不涉及链上操作）
+      // 卖单：自动获取卖家 Kava 地址（用于绿积分转账）
       let sellerKavaAddress: string | null = null;
       if (type === C2C_ORDER_TYPE.SELL) {
         sellerKavaAddress = await this.identityClient.getUserKavaAddress(accountSequence);
-        // Kava 地址仅作为订单附加信息，获取失败不阻断创建
+        if (!sellerKavaAddress) {
+          throw new BadRequestException('未找到您的 Kava 钱包地址，请先绑定钱包');
+        }
       }
 
       // 计算总金额