The most common cause of breast pain during breastfeeding is that the milk ducts are not particularly clear. In this case, the first thing you need to do is to clear the milk ducts. If no lumps are found, you can find a professional lactation consultant to do physiotherapy, massage, and usually try to let the baby suck the milk empty. If the baby is limited in the amount of milk, it is recommended that you can use a breast pump or use your hands to expel the remaining milk from the breast, which can prevent the occurrence of mastitis. On the other hand, it is recommended not to eat too much greasy food, especially in the first three months after giving birth, because the baby’s milk intake is very limited, and it is not yet possible for the breasts to reach a balanced state of supply and demand. It is recommended that you can wash your nipples with water after every sucking to prevent scabs, which can easily lead to blockage of the milk ducts. If it is really very painful, you can use potassium permanganate diluted, give a local compress, may be able to relieve the symptoms.