diff --git a/internal/domain/pig/pig_batch_service.go b/internal/domain/pig/pig_batch_service.go
index 39c4e92..adc5d6a 100644
--- a/internal/domain/pig/pig_batch_service.go
+++ b/internal/domain/pig/pig_batch_service.go
@@ -77,6 +77,12 @@ type PigBatchService interface {
 	RecordSickPigDeath(operatorID uint, batchID uint, penID uint, quantity int, treatmentLocation models.PigBatchSickPigTreatmentLocation, happenedAt time.Time, remarks string) error
 	// RecordSickPigCull 记录病猪淘汰事件。
 	RecordSickPigCull(operatorID uint, batchID uint, penID uint, quantity int, treatmentLocation models.PigBatchSickPigTreatmentLocation, happenedAt time.Time, remarks string) error
+
+	// --- 正常猪只管理相关方法 ---
+	// RecordDeath 记录正常猪只死亡事件。
+	RecordDeath(operatorID uint, batchID uint, penID uint, quantity int, happenedAt time.Time, remarks string) error
+	// RecordCull 记录正常猪只淘汰事件。
+	RecordCull(operatorID uint, batchID uint, penID uint, quantity int, happenedAt time.Time, remarks string) error
 }
 
 // pigBatchService 是 PigBatchService 接口的具体实现。
diff --git a/internal/domain/pig/pig_batch_service_pig_sick.go b/internal/domain/pig/pig_batch_service_pig_sick.go
index 53dc18b..b5bbe78 100644
--- a/internal/domain/pig/pig_batch_service_pig_sick.go
+++ b/internal/domain/pig/pig_batch_service_pig_sick.go
@@ -323,8 +323,8 @@ func (s *pigBatchService) RecordSickPigCull(operatorID uint, batchID uint, penID
 			TransferTime: happenedAt,
 			PigBatchID:   batchID,
 			PenID:        penID,
-			Quantity:     -quantity,                       // 减少猪只数量
-			Type:         models.PigTransferTypeEliminate, // 淘汰类型
+			Quantity:     -quantity,                  // 减少猪只数量
+			Type:         models.PigTransferTypeCull, // 淘汰类型
 			OperatorID:   operatorID,
 			Remarks:      remarks,
 		}
@@ -341,3 +341,143 @@ func (s *pigBatchService) RecordSickPigCull(operatorID uint, batchID uint, penID
 
 	return nil
 }
+
+// RecordDeath 记录正常猪只死亡事件。
+func (s *pigBatchService) RecordDeath(operatorID uint, batchID uint, penID uint, quantity int, happenedAt time.Time, remarks string) error {
+	if quantity <= 0 {
+		return errors.New("死亡猪只数量必须大于0")
+	}
+
+	var err error
+	err = s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
+		// 1. 检查批次是否活跃
+		batch, err := s.pigBatchRepo.GetPigBatchByIDTx(tx, batchID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrPigBatchNotFound
+			}
+			return fmt.Errorf("获取批次 %d 失败: %w", batchID, err)
+		}
+		if !batch.IsActive() {
+			return fmt.Errorf("批次 %d 不活跃，无法记录死亡事件", batchID)
+		}
+
+		// 2. 检查猪栏是否关联
+		pen, err := s.transferSvc.GetPenByID(tx, penID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrPenNotFound
+			}
+			return fmt.Errorf("获取猪栏 %d 失败: %w", penID, err)
+		}
+		if pen.PigBatchID == nil || *pen.PigBatchID != batchID {
+			return fmt.Errorf("猪栏 %d 未与批次 %d 关联", penID, batchID)
+		}
+
+		// 3. 检查猪栏内猪只数量是否足够死亡
+		currentPigsInPen, err := s.transferSvc.GetCurrentPigsInPen(tx, penID)
+		if err != nil {
+			return fmt.Errorf("获取猪栏 %d 当前猪只数量失败: %w", penID, err)
+		}
+		if currentPigsInPen < quantity {
+			return fmt.Errorf("猪栏 %d 内猪只数量不足，当前 %d 头，尝试记录死亡 %d 头", penID, currentPigsInPen, quantity)
+		}
+
+		// 4. 更新批次总猪只数量 (减少批次总数)
+		if err := s.UpdatePigBatchQuantity(operatorID, batchID, models.ChangeTypeDeath, -quantity, remarks, happenedAt); err != nil {
+			return fmt.Errorf("更新批次 %d 总猪只数量失败: %w", batchID, err)
+		}
+
+		// 5. 记录猪只转移日志 (减少猪栏内猪只数量)
+		transferLog := &models.PigTransferLog{
+			TransferTime: happenedAt,
+			PigBatchID:   batchID,
+			PenID:        penID,
+			Quantity:     -quantity, // 减少猪只数量
+			Type:         models.PigTransferTypeDeath,
+			OperatorID:   operatorID,
+			Remarks:      remarks,
+		}
+		if err := s.transferSvc.LogTransfer(tx, transferLog); err != nil {
+			return fmt.Errorf("记录猪只死亡转移日志失败: %w", err)
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return fmt.Errorf("记录正常猪只死亡事件失败: %w", err)
+	}
+
+	return nil
+}
+
+// RecordCull 记录正常猪只淘汰事件。
+func (s *pigBatchService) RecordCull(operatorID uint, batchID uint, penID uint, quantity int, happenedAt time.Time, remarks string) error {
+	if quantity <= 0 {
+		return errors.New("淘汰猪只数量必须大于0")
+	}
+
+	var err error
+	err = s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
+		// 1. 检查批次是否活跃
+		batch, err := s.pigBatchRepo.GetPigBatchByIDTx(tx, batchID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrPigBatchNotFound
+			}
+			return fmt.Errorf("获取批次 %d 失败: %w", batchID, err)
+		}
+		if !batch.IsActive() {
+			return fmt.Errorf("批次 %d 不活跃，无法记录淘汰事件", batchID)
+		}
+
+		// 2. 检查猪栏是否关联
+		pen, err := s.transferSvc.GetPenByID(tx, penID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrPenNotFound
+			}
+			return fmt.Errorf("获取猪栏 %d 失败: %w", penID, err)
+		}
+		if pen.PigBatchID == nil || *pen.PigBatchID != batchID {
+			return fmt.Errorf("猪栏 %d 未与批次 %d 关联", penID, batchID)
+		}
+
+		// 3. 检查猪栏内猪只数量是否足够淘汰
+		currentPigsInPen, err := s.transferSvc.GetCurrentPigsInPen(tx, penID)
+		if err != nil {
+			return fmt.Errorf("获取猪栏 %d 当前猪只数量失败: %w", penID, err)
+		}
+		if currentPigsInPen < quantity {
+			return fmt.Errorf("猪栏 %d 内猪只数量不足，当前 %d 头，尝试记录淘汰 %d 头", penID, currentPigsInPen, quantity)
+		}
+
+		// 4. 更新批次总猪只数量 (减少批次总数)
+		if err := s.UpdatePigBatchQuantity(operatorID, batchID, models.ChangeTypeCull, -quantity, remarks, happenedAt); err != nil {
+			return fmt.Errorf("更新批次 %d 总猪只数量失败: %w", batchID, err)
+		}
+
+		// 5. 记录猪只转移日志 (减少猪栏内猪只数量)
+		transferLog := &models.PigTransferLog{
+			TransferTime: happenedAt,
+			PigBatchID:   batchID,
+			PenID:        penID,
+			Quantity:     -quantity, // 减少猪只数量
+			Type:         models.PigTransferTypeCull,
+			OperatorID:   operatorID,
+			Remarks:      remarks,
+		}
+		if err := s.transferSvc.LogTransfer(tx, transferLog); err != nil {
+			return fmt.Errorf("记录猪只淘汰转移日志失败: %w", err)
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return fmt.Errorf("记录正常猪只淘汰事件失败: %w", err)
+	}
+
+	return nil
+}
diff --git a/internal/infra/models/pig_transfer.go b/internal/infra/models/pig_transfer.go
index 70361f2..3fc3a04 100644
--- a/internal/infra/models/pig_transfer.go
+++ b/internal/infra/models/pig_transfer.go
@@ -14,7 +14,7 @@ const (
 	PigTransferTypeCrossBatch           PigTransferType = "跨群调栏" // 不同猪群间的调动
 	PigTransferTypeSale                 PigTransferType = "销售"   // 猪只售出
 	PigTransferTypeDeath                PigTransferType = "死亡"   // 猪只死亡
-	PigTransferTypeEliminate            PigTransferType = "淘汰"   // 猪只淘汰
+	PigTransferTypeCull                 PigTransferType = "淘汰"   // 猪只淘汰
 	PigTransferTypePurchase             PigTransferType = "新购入"  // 新购入猪只
 	PigTransferTypeDeliveryRoomTransfor PigTransferType = "产房转入" // 产房转入
 	// 可以根据业务需求添加更多类型，例如：转出到其他农场等