diff --git a/internal/logic/public/user/familyBindingHelper.go b/internal/logic/public/user/familyBindingHelper.go
index b11a062..d4962e2 100644
--- a/internal/logic/public/user/familyBindingHelper.go
+++ b/internal/logic/public/user/familyBindingHelper.go
@@ -209,10 +209,9 @@ func transferMemberSubscribesToOwner(tx *gorm.DB, memberUserId, ownerUserId int6
 	if len(subscribes) == 0 {
 		return nil, nil
 	}
-	if err := tx.Model(&user.Subscribe{}).
-		Where("user_id = ?", memberUserId).
-		Update("user_id", ownerUserId).Error; err != nil {
-		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseUpdateError), "transfer member subscribes to owner failed")
+	// 加入家庭组时，无条件丢弃成员的所有订阅（软删除）
+	if err := tx.Where("user_id = ?", memberUserId).Delete(&user.Subscribe{}).Error; err != nil {
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseUpdateError), "discard member subscribes failed")
 	}
 	return subscribes, nil
 }