Breastfeeding will disappear naturally. Breastfeeding is a process of gradually reducing the amount and frequency of breastfeeding to achieve the purpose of weaning. This is mainly due to the fact that the milk is not discharged properly and then stagnates, which can lead to hard lumps. Although the lumps will disappear on their own, if the pain is unbearable when breastfeeding, you can use a breast pump to suck out the milk in order to prevent acute mastitis. However, when squeezing out the milk, do not squeeze out all of the milk. Squeezing out all of the milk will promote the secretion of milk, which will not be able to relieve the pain and swelling of breastfeeding. Some women can use hot compresses on their breasts to relieve the swelling and pain when breastfeeding. If there are hard lumps and obvious swelling and pain in the breasts, you can use Chinese herbs to regulate them under the guidance of a doctor.