diff --git a/backend/services/reward-service/src/domain/services/reward-calculation.service.ts b/backend/services/reward-service/src/domain/services/reward-calculation.service.ts
index ee38b19c..f2d6632e 100644
--- a/backend/services/reward-service/src/domain/services/reward-calculation.service.ts
+++ b/backend/services/reward-service/src/domain/services/reward-calculation.service.ts
@@ -30,13 +30,13 @@ export interface AreaRewardDistribution {
 }
 
 export interface IAuthorizationServiceClient {
-  findNearestAuthorizedProvince(userId: bigint, provinceCode: string): Promise<bigint | null>;
-  findNearestAuthorizedCity(userId: bigint, cityCode: string): Promise<bigint | null>;
-  findNearestCommunity(userId: bigint): Promise<bigint | null>;
-  getCommunityRewardDistribution(userId: bigint, treeCount: number): Promise<RewardDistribution>;
-  getProvinceTeamRewardDistribution(userId: bigint, provinceCode: string, treeCount: number): Promise<RewardDistribution>;
+  findNearestAuthorizedProvince(accountSequence: string, provinceCode: string): Promise<string | null>;
+  findNearestAuthorizedCity(accountSequence: string, cityCode: string): Promise<string | null>;
+  findNearestCommunity(accountSequence: string): Promise<string | null>;
+  getCommunityRewardDistribution(accountSequence: string, treeCount: number): Promise<RewardDistribution>;
+  getProvinceTeamRewardDistribution(accountSequence: string, provinceCode: string, treeCount: number): Promise<RewardDistribution>;
   getProvinceAreaRewardDistribution(provinceCode: string, treeCount: number): Promise<AreaRewardDistribution>;
-  getCityTeamRewardDistribution(userId: bigint, cityCode: string, treeCount: number): Promise<RewardDistribution>;
+  getCityTeamRewardDistribution(accountSequence: string, cityCode: string, treeCount: number): Promise<RewardDistribution>;
   getCityAreaRewardDistribution(cityCode: string, treeCount: number): Promise<AreaRewardDistribution>;
 }
 
@@ -145,6 +145,7 @@ export class RewardCalculationService {
     const provinceTeamRewards = await this.calculateProvinceTeamRight(
       params.sourceOrderNo,
       params.sourceUserId,
+      params.sourceAccountSequence!,
       params.provinceCode,
       params.treeCount,
     );
@@ -163,6 +164,7 @@ export class RewardCalculationService {
     const cityTeamRewards = await this.calculateCityTeamRight(
       params.sourceOrderNo,
       params.sourceUserId,
+      params.sourceAccountSequence!,
       params.cityCode,
       params.treeCount,
     );
@@ -181,6 +183,7 @@ export class RewardCalculationService {
     const communityRewards = await this.calculateCommunityRight(
       params.sourceOrderNo,
       params.sourceUserId,
+      params.sourceAccountSequence!,
       params.treeCount,
     );
     rewards.push(...communityRewards);
@@ -393,18 +396,19 @@ export class RewardCalculationService {
   private async calculateProvinceTeamRight(
     sourceOrderNo: string,
     sourceUserId: bigint,
+    sourceAccountSequence: string,
     provinceCode: string,
     treeCount: number,
   ): Promise<RewardLedgerEntry[]> {
     this.logger.debug(
-      `[calculateProvinceTeamRight] userId=${sourceUserId}, province=${provinceCode}, treeCount=${treeCount}`,
+      `[calculateProvinceTeamRight] accountSequence=${sourceAccountSequence}, province=${provinceCode}, treeCount=${treeCount}`,
     );
 
     const { usdt, hashpowerPercent } = RIGHT_AMOUNTS[RightType.PROVINCE_TEAM_RIGHT];
 
     // 调用 authorization-service 获取省团队权益分配方案
     const distribution = await this.authorizationService.getProvinceTeamRewardDistribution(
-      sourceUserId,
+      sourceAccountSequence,
       provinceCode,
       treeCount,
     );
@@ -504,18 +508,19 @@ export class RewardCalculationService {
   private async calculateCityTeamRight(
     sourceOrderNo: string,
     sourceUserId: bigint,
+    sourceAccountSequence: string,
     cityCode: string,
     treeCount: number,
   ): Promise<RewardLedgerEntry[]> {
     this.logger.debug(
-      `[calculateCityTeamRight] userId=${sourceUserId}, city=${cityCode}, treeCount=${treeCount}`,
+      `[calculateCityTeamRight] accountSequence=${sourceAccountSequence}, city=${cityCode}, treeCount=${treeCount}`,
     );
 
     const { usdt, hashpowerPercent } = RIGHT_AMOUNTS[RightType.CITY_TEAM_RIGHT];
 
     // 调用 authorization-service 获取市团队权益分配方案
     const distribution = await this.authorizationService.getCityTeamRewardDistribution(
-      sourceUserId,
+      sourceAccountSequence,
       cityCode,
       treeCount,
     );
@@ -617,17 +622,18 @@ export class RewardCalculationService {
   private async calculateCommunityRight(
     sourceOrderNo: string,
     sourceUserId: bigint,
+    sourceAccountSequence: string,
     treeCount: number,
   ): Promise<RewardLedgerEntry[]> {
     this.logger.debug(
-      `[calculateCommunityRight] userId=${sourceUserId}, treeCount=${treeCount}`,
+      `[calculateCommunityRight] accountSequence=${sourceAccountSequence}, treeCount=${treeCount}`,
     );
 
     const { usdt, hashpowerPercent } = RIGHT_AMOUNTS[RightType.COMMUNITY_RIGHT];
 
     // 调用 authorization-service 获取社区权益分配方案
     const distribution = await this.authorizationService.getCommunityRewardDistribution(
-      sourceUserId,
+      sourceAccountSequence,
       treeCount,
     );
 
diff --git a/backend/services/reward-service/src/infrastructure/external/authorization-service/authorization-service.client.ts b/backend/services/reward-service/src/infrastructure/external/authorization-service/authorization-service.client.ts
index eb030feb..53d36813 100644
--- a/backend/services/reward-service/src/infrastructure/external/authorization-service/authorization-service.client.ts
+++ b/backend/services/reward-service/src/infrastructure/external/authorization-service/authorization-service.client.ts
@@ -39,71 +39,69 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
     this.baseUrl = this.configService.get<string>('AUTHORIZATION_SERVICE_URL', 'http://localhost:3006');
   }
 
-  async findNearestAuthorizedProvince(userId: bigint, provinceCode: string): Promise<bigint | null> {
+  async findNearestAuthorizedProvince(accountSequence: string, provinceCode: string): Promise<string | null> {
     try {
       const response = await fetch(
-        `${this.baseUrl}/api/v1/authorization/nearest-province?accountSequence=${userId}&provinceCode=${provinceCode}`,
+        `${this.baseUrl}/api/v1/authorization/nearest-province?accountSequence=${accountSequence}&provinceCode=${provinceCode}`,
       );
 
       if (!response.ok) {
-        this.logger.warn(`No authorized province found for user ${userId}, province ${provinceCode}`);
+        this.logger.warn(`No authorized province found for accountSequence ${accountSequence}, province ${provinceCode}`);
         return null;
       }
 
       // authorization-service 返回格式: { success, data: { accountSequence }, timestamp }
       const result: AuthorizationServiceResponse<NearestAuthorizationResult> = await response.json();
-      const accountSeq = result.data?.accountSequence;
-      return accountSeq ? BigInt(accountSeq) : null;
+      return result.data?.accountSequence || null;
     } catch (error) {
       this.logger.error(`Error finding nearest authorized province:`, error);
       return null;
     }
   }
 
-  async findNearestAuthorizedCity(userId: bigint, cityCode: string): Promise<bigint | null> {
+  async findNearestAuthorizedCity(accountSequence: string, cityCode: string): Promise<string | null> {
     try {
       const response = await fetch(
-        `${this.baseUrl}/api/v1/authorization/nearest-city?accountSequence=${userId}&cityCode=${cityCode}`,
+        `${this.baseUrl}/api/v1/authorization/nearest-city?accountSequence=${accountSequence}&cityCode=${cityCode}`,
       );
 
       if (!response.ok) {
-        this.logger.warn(`No authorized city found for user ${userId}, city ${cityCode}`);
+        this.logger.warn(`No authorized city found for accountSequence ${accountSequence}, city ${cityCode}`);
         return null;
       }
 
       // authorization-service 返回格式: { success, data: { accountSequence }, timestamp }
       const result: AuthorizationServiceResponse<NearestAuthorizationResult> = await response.json();
-      const accountSeq = result.data?.accountSequence;
-      return accountSeq ? BigInt(accountSeq) : null;
+      return result.data?.accountSequence || null;
     } catch (error) {
       this.logger.error(`Error finding nearest authorized city:`, error);
       return null;
     }
   }
 
-  async findNearestCommunity(userId: bigint): Promise<bigint | null> {
+  async findNearestCommunity(accountSequence: string): Promise<string | null> {
     try {
       const response = await fetch(
-        `${this.baseUrl}/api/v1/authorization/nearest-community?accountSequence=${userId}`,
+        `${this.baseUrl}/api/v1/authorization/nearest-community?accountSequence=${accountSequence}`,
       );
 
       if (!response.ok) {
-        this.logger.warn(`No community found for user ${userId}`);
+        this.logger.warn(`No community found for accountSequence ${accountSequence}`);
         return null;
       }
 
       // authorization-service 返回格式: { success, data: { accountSequence }, timestamp }
       const result: AuthorizationServiceResponse<NearestAuthorizationResult> = await response.json();
-      const accountSeq = result.data?.accountSequence;
-      this.logger.debug(`findNearestCommunity for userId=${userId}: result=${accountSeq}`);
-      return accountSeq ? BigInt(accountSeq) : null;
+      const resultAccountSeq = result.data?.accountSequence;
+      this.logger.debug(`findNearestCommunity for accountSequence=${accountSequence}: result=${resultAccountSeq}`);
+      return resultAccountSeq || null;
     } catch (error) {
       this.logger.error(`Error finding nearest community:`, error);
       return null;
     }
   }
 
-  async getCommunityRewardDistribution(userId: bigint, treeCount: number): Promise<RewardDistribution> {
+  async getCommunityRewardDistribution(accountSequence: string, treeCount: number): Promise<RewardDistribution> {
     const HEADQUARTERS_ACCOUNT_SEQUENCE = 'S0000000001';
     const defaultDistribution: RewardDistribution = {
       distributions: [
@@ -117,11 +115,11 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
 
     try {
       const response = await fetch(
-        `${this.baseUrl}/api/v1/authorization/community-reward-distribution?accountSequence=${userId}&treeCount=${treeCount}`,
+        `${this.baseUrl}/api/v1/authorization/community-reward-distribution?accountSequence=${accountSequence}&treeCount=${treeCount}`,
       );
 
       if (!response.ok) {
-        this.logger.warn(`Failed to get community reward distribution for user ${userId}, treeCount ${treeCount}`);
+        this.logger.warn(`Failed to get community reward distribution for accountSequence ${accountSequence}, treeCount ${treeCount}`);
         return defaultDistribution;
       }
 
@@ -129,12 +127,12 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
       const result: AuthorizationServiceResponse<RewardDistributionResult> = await response.json();
 
       if (!result.data?.distributions || result.data.distributions.length === 0) {
-        this.logger.warn(`Empty distributions returned for user ${userId}`);
+        this.logger.warn(`Empty distributions returned for accountSequence ${accountSequence}`);
         return defaultDistribution;
       }
 
       this.logger.debug(
-        `getCommunityRewardDistribution for userId=${userId}, treeCount=${treeCount}: ` +
+        `getCommunityRewardDistribution for accountSequence=${accountSequence}, treeCount=${treeCount}: ` +
         `distributions=${JSON.stringify(result.data.distributions)}`,
       );
 
@@ -145,7 +143,7 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
     }
   }
 
-  async getProvinceTeamRewardDistribution(userId: bigint, provinceCode: string, treeCount: number): Promise<RewardDistribution> {
+  async getProvinceTeamRewardDistribution(accountSequence: string, provinceCode: string, treeCount: number): Promise<RewardDistribution> {
     const HEADQUARTERS_ACCOUNT_SEQUENCE = 'S0000000001';
     const defaultDistribution: RewardDistribution = {
       distributions: [
@@ -159,23 +157,23 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
 
     try {
       const response = await fetch(
-        `${this.baseUrl}/api/v1/authorization/province-team-reward-distribution?accountSequence=${userId}&provinceCode=${provinceCode}&treeCount=${treeCount}`,
+        `${this.baseUrl}/api/v1/authorization/province-team-reward-distribution?accountSequence=${accountSequence}&provinceCode=${provinceCode}&treeCount=${treeCount}`,
       );
 
       if (!response.ok) {
-        this.logger.warn(`Failed to get province team reward distribution for user ${userId}, province ${provinceCode}`);
+        this.logger.warn(`Failed to get province team reward distribution for accountSequence ${accountSequence}, province ${provinceCode}`);
         return defaultDistribution;
       }
 
       const result: AuthorizationServiceResponse<RewardDistributionResult> = await response.json();
 
       if (!result.data?.distributions || result.data.distributions.length === 0) {
-        this.logger.warn(`Empty province team distributions returned for user ${userId}`);
+        this.logger.warn(`Empty province team distributions returned for accountSequence ${accountSequence}`);
         return defaultDistribution;
       }
 
       this.logger.debug(
-        `getProvinceTeamRewardDistribution for userId=${userId}, provinceCode=${provinceCode}, treeCount=${treeCount}: ` +
+        `getProvinceTeamRewardDistribution for accountSequence=${accountSequence}, provinceCode=${provinceCode}, treeCount=${treeCount}: ` +
         `distributions=${JSON.stringify(result.data.distributions)}`,
       );
 
@@ -229,7 +227,7 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
     }
   }
 
-  async getCityTeamRewardDistribution(userId: bigint, cityCode: string, treeCount: number): Promise<RewardDistribution> {
+  async getCityTeamRewardDistribution(accountSequence: string, cityCode: string, treeCount: number): Promise<RewardDistribution> {
     const HEADQUARTERS_ACCOUNT_SEQUENCE = 'S0000000001';
     const defaultDistribution: RewardDistribution = {
       distributions: [
@@ -243,23 +241,23 @@ export class AuthorizationServiceClient implements IAuthorizationServiceClient {
 
     try {
       const response = await fetch(
-        `${this.baseUrl}/api/v1/authorization/city-team-reward-distribution?accountSequence=${userId}&cityCode=${cityCode}&treeCount=${treeCount}`,
+        `${this.baseUrl}/api/v1/authorization/city-team-reward-distribution?accountSequence=${accountSequence}&cityCode=${cityCode}&treeCount=${treeCount}`,
       );
 
       if (!response.ok) {
-        this.logger.warn(`Failed to get city team reward distribution for user ${userId}, city ${cityCode}`);
+        this.logger.warn(`Failed to get city team reward distribution for accountSequence ${accountSequence}, city ${cityCode}`);
         return defaultDistribution;
       }
 
       const result: AuthorizationServiceResponse<RewardDistributionResult> = await response.json();
 
       if (!result.data?.distributions || result.data.distributions.length === 0) {
-        this.logger.warn(`Empty city team distributions returned for user ${userId}`);
+        this.logger.warn(`Empty city team distributions returned for accountSequence ${accountSequence}`);
         return defaultDistribution;
       }
 
       this.logger.debug(
-        `getCityTeamRewardDistribution for userId=${userId}, cityCode=${cityCode}, treeCount=${treeCount}: ` +
+        `getCityTeamRewardDistribution for accountSequence=${accountSequence}, cityCode=${cityCode}, treeCount=${treeCount}: ` +
         `distributions=${JSON.stringify(result.data.distributions)}`,
       );