diff --git a/internal/service/commission_calculation/service.go b/internal/service/commission_calculation/service.go
index ac14c6c..088ab56 100644
--- a/internal/service/commission_calculation/service.go
+++ b/internal/service/commission_calculation/service.go
@@ -449,12 +449,23 @@ func (s *Service) calculateChainOneTimeCommission(ctx context.Context, bottomSho
 		var myAmount int64
 
 		if config.CommissionType == "tiered" && len(config.Tiers) > 0 {
-			tieredAmount, tierErr := s.matchOneTimeCommissionTier(ctx, currentShopID, seriesID, currentSeriesAllocation.ID, config.Tiers)
-			if tierErr != nil {
-				s.logger.Warn("匹配梯度佣金失败，使用固定金额", zap.Uint("shop_id", currentShopID), zap.Error(tierErr))
+			// 获取该代理的专属阶梯金额列表
+			agentTiers, tiersErr := currentSeriesAllocation.GetCommissionTiers()
+			if tiersErr != nil {
+				s.logger.Warn("解析代理阶梯佣金失败，使用固定金额", zap.Uint("shop_id", currentShopID), zap.Error(tiersErr))
+				myAmount = currentSeriesAllocation.OneTimeCommissionAmount
+			} else if len(agentTiers) == 0 {
+				// commission_tiers_json 为空（历史数据），降级到 OneTimeCommissionAmount
+				s.logger.Warn("代理专属阶梯为空，fallback 到固定金额", zap.Uint("shop_id", currentShopID))
 				myAmount = currentSeriesAllocation.OneTimeCommissionAmount
 			} else {
-				myAmount = tieredAmount
+				tieredAmount, tierErr := s.matchOneTimeCommissionTier(ctx, currentShopID, seriesID, currentSeriesAllocation.ID, config.Tiers, agentTiers)
+				if tierErr != nil {
+					s.logger.Warn("匹配梯度佣金失败，使用固定金额", zap.Uint("shop_id", currentShopID), zap.Error(tierErr))
+					myAmount = currentSeriesAllocation.OneTimeCommissionAmount
+				} else {
+					myAmount = tieredAmount
+				}
 			}
 		} else {
 			myAmount = currentSeriesAllocation.OneTimeCommissionAmount
@@ -512,7 +523,7 @@ func (s *Service) calculateChainOneTimeCommission(ctx context.Context, bottomSho
 	return records, nil
 }
 
-func (s *Service) matchOneTimeCommissionTier(ctx context.Context, shopID uint, seriesID uint, allocationID uint, tiers []model.OneTimeCommissionTier) (int64, error) {
+func (s *Service) matchOneTimeCommissionTier(ctx context.Context, shopID uint, seriesID uint, allocationID uint, tiers []model.OneTimeCommissionTier, agentTiers []model.AllocationCommissionTier) (int64, error) {
 	if len(tiers) == 0 {
 		return 0, nil
 	}
@@ -553,8 +564,29 @@ func (s *Service) matchOneTimeCommissionTier(ctx context.Context, shopID uint, s
 			currentValue = salesAmount
 		}
 
-		if currentValue >= tier.Threshold && tier.Amount > matchedAmount {
-			matchedAmount = tier.Amount
+		// 根据 tier.Operator 判断是否命中阈值，Operator 为空时默认 >=
+		var hit bool
+		switch tier.Operator {
+		case model.TierOperatorGT:
+			hit = currentValue > tier.Threshold
+		case model.TierOperatorLT:
+			hit = currentValue < tier.Threshold
+		case model.TierOperatorLTE:
+			hit = currentValue <= tier.Threshold
+		default: // >= 或空字符串
+			hit = currentValue >= tier.Threshold
+		}
+
+		if !hit {
+			continue
+		}
+
+		// 从代理专属阶梯列表中按 threshold 查找对应金额
+		for _, agentTier := range agentTiers {
+			if agentTier.Threshold == tier.Threshold && agentTier.Amount > matchedAmount {
+				matchedAmount = agentTier.Amount
+				break
+			}
 		}
 	}
 
diff --git a/internal/service/package/service.go b/internal/service/package/service.go
index 6db432b..89dbff3 100644
--- a/internal/service/package/service.go
+++ b/internal/service/package/service.go
@@ -616,8 +616,8 @@ func (s *Service) fillCommissionInfo(resp *dto.PackageResponse, seriesID uint, s
 		return
 	}
 
-	// 检查是否启用一次性佣金
-	if !seriesAllocation.EnableOneTimeCommission || !config.Enable {
+	// 一次性佣金是否启用由 PackageSeries.enable_one_time_commission 控制
+	if !config.Enable {
 		return
 	}