diff --git a/backend/services/reward-service/src/application/services/reward-application.service.ts b/backend/services/reward-service/src/application/services/reward-application.service.ts
index 85a45b14..63c84828 100644
--- a/backend/services/reward-service/src/application/services/reward-application.service.ts
+++ b/backend/services/reward-service/src/application/services/reward-application.service.ts
@@ -55,10 +55,13 @@ export class RewardApplicationService {
     const rewards = await this.rewardCalculationService.calculateRewards(params);
 
     // 2. 调用 wallet-service 执行真正的资金分配
+    // 字段映射：targetType=USER/SYSTEM, targetId=accountSequence, allocationType=rightType
     const allocations = rewards.map(reward => ({
-      targetType: reward.rewardSource.rightType,
+      targetType: reward.accountSequence.startsWith('S') ? 'SYSTEM' : 'USER',
+      targetId: reward.accountSequence,  // 使用 accountSequence 而不是 userId
+      allocationType: reward.rewardSource.rightType,
       amount: reward.usdtAmount.amount,
-      targetAccountId: `USER:${reward.userId}`,
+      hashpowerPercent: reward.hashpowerAmount.value > 0 ? reward.hashpowerAmount.value : undefined,
       metadata: {
         rightType: reward.rewardSource.rightType,
         sourceOrderNo: params.sourceOrderNo,
diff --git a/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts b/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts
index ef60d9a6..48355d4f 100644
--- a/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts
+++ b/backend/services/reward-service/src/infrastructure/external/wallet-service/wallet-service.client.ts
@@ -10,9 +10,17 @@ export interface SwapResult {
 }
 
 export interface FundAllocationItem {
-  targetType: string;
+  // 目标类型: USER 或 SYSTEM
+  targetType: 'USER' | 'SYSTEM';
+  // 目标ID: accountSequence (如 D2512120001 或 S0000000001)
+  targetId: string;
+  // 分配类型 (如 COST_FEE, SHARE_RIGHT 等)
+  allocationType: string;
+  // 金额 (USDT)
   amount: number;
-  targetAccountId: string;
+  // 算力百分比（可选）
+  hashpowerPercent?: number;
+  // 元数据
   metadata?: Record<string, unknown>;
 }