Postpartum breast engorgement and pain with lumps may indicate milk stasis within the breast. It is recommended to let the child suckle more. If the engorgement and pain persist due to a significant amount of residual milk, you can manually express the milk or use an electric breast pump to remove it to prevent the accumulation of milk, which can lead to mastitis. If the pain is severe and accompanied by fever, it is advised to stop breastfeeding from that side and seek medical attention promptly. If necessary, oral anti-inflammatory medication may be administered. During the postpartum period, care should be taken to avoid putting pressure on the breasts.