diff --git a/backend/services/authorization-service/src/infrastructure/kafka/event-consumer.controller.ts b/backend/services/authorization-service/src/infrastructure/kafka/event-consumer.controller.ts
index 15edbed7..457f61be 100644
--- a/backend/services/authorization-service/src/infrastructure/kafka/event-consumer.controller.ts
+++ b/backend/services/authorization-service/src/infrastructure/kafka/event-consumer.controller.ts
@@ -531,6 +531,7 @@ export class EventConsumerController {
   /**
    * 检查单个省团队是否可以升级为省区域
    * 业务规则：省团队本人伞下认种数（不含自己）达到5万棵时自动升级
+   * 注意：referral-service 返回的 totalTeamPlantingCount 已经是不含自己的伞下认种数
    */
   private async checkAuthProvinceUpgrade(authProvince: AuthorizationRole): Promise<void> {
     const accountSequence = authProvince.userId.accountSequence
@@ -544,12 +545,12 @@ export class EventConsumerController {
       return
     }
 
-    // 伞下认种数 = 团队总认种数 - 自己认种数
-    const subordinateCount = teamStats.totalTeamPlantingCount - teamStats.selfPlantingCount
+    // totalTeamPlantingCount 已经是伞下认种数（不含自己）
+    const subordinateCount = teamStats.totalTeamPlantingCount
 
     // 2. 检查伞下认种数是否达到省区域升级阈值（5万棵）
     if (subordinateCount < EventConsumerController.PROVINCE_UPGRADE_THRESHOLD) {
-      this.logger.debug(`[TEAM-AUTO-UPGRADE] Auth province ${accountSequence} has subordinate count ${subordinateCount} (total=${teamStats.totalTeamPlantingCount}, self=${teamStats.selfPlantingCount}), not reaching ${EventConsumerController.PROVINCE_UPGRADE_THRESHOLD} threshold`)
+      this.logger.debug(`[TEAM-AUTO-UPGRADE] Auth province ${accountSequence} has subordinate count ${subordinateCount}, not reaching ${EventConsumerController.PROVINCE_UPGRADE_THRESHOLD} threshold`)
       return
     }
 
@@ -621,6 +622,7 @@ export class EventConsumerController {
   /**
    * 检查单个市团队是否可以升级为市区域
    * 业务规则：市团队本人伞下认种数（不含自己）达到1万棵时自动升级
+   * 注意：referral-service 返回的 totalTeamPlantingCount 已经是不含自己的伞下认种数
    */
   private async checkAuthCityUpgrade(authCity: AuthorizationRole): Promise<void> {
     const accountSequence = authCity.userId.accountSequence
@@ -634,12 +636,12 @@ export class EventConsumerController {
       return
     }
 
-    // 伞下认种数 = 团队总认种数 - 自己认种数
-    const subordinateCount = teamStats.totalTeamPlantingCount - teamStats.selfPlantingCount
+    // totalTeamPlantingCount 已经是伞下认种数（不含自己）
+    const subordinateCount = teamStats.totalTeamPlantingCount
 
     // 2. 检查伞下认种数是否达到市区域升级阈值（1万棵）
     if (subordinateCount < EventConsumerController.CITY_UPGRADE_THRESHOLD) {
-      this.logger.debug(`[TEAM-AUTO-UPGRADE] Auth city ${accountSequence} has subordinate count ${subordinateCount} (total=${teamStats.totalTeamPlantingCount}, self=${teamStats.selfPlantingCount}), not reaching ${EventConsumerController.CITY_UPGRADE_THRESHOLD} threshold`)
+      this.logger.debug(`[TEAM-AUTO-UPGRADE] Auth city ${accountSequence} has subordinate count ${subordinateCount}, not reaching ${EventConsumerController.CITY_UPGRADE_THRESHOLD} threshold`)
       return
     }