diff --git a/internal/infra/models/pig.go b/internal/infra/models/pig.go
index 4c5586f..a954799 100644
--- a/internal/infra/models/pig.go
+++ b/internal/infra/models/pig.go
@@ -40,7 +40,6 @@ type PigBatch struct {
 	CurrentCount     int                `gorm:"not null;comment:当前存栏数量"`
 	CurrentSickCount int                `gorm:"not null;default:0;comment:当前病猪数量"`
 	Status           PigBatchStatus     `gorm:"size:20;not null;index;comment:批次状态"`
-	Pens             []Pen              `gorm:"foreignKey:PigBatchID;comment:所在圈舍ID"`
 }
 
 func (PigBatch) TableName() string {