Breast milk contains lactoferrin, protein, fat and vitamins, which is the main source of nutrients for newborns in the early stages of birth and contains protein to enhance resistance to diseases. Therefore, breastfeeding is advocated. In the first few days of breastfeeding, the mother will feel some tingling in her nipples, and there is also pain caused by the nerves stimulated by sucking empty milk while breastfeeding, which usually lasts for a few seconds and then disappears, which is normal. Breast pain during breastfeeding can also be seen when the baby bites or too much milk accumulates when drinking milk. If there is swelling and distension of the breast and hard lumps, the milk needs to be discharged in time, otherwise it will then aggravate the formation of acute mastitis, causing fever, which can seriously become a breast abscess and require suspension of breastfeeding to avoid drugs being absorbed through the breast milk baby and affecting the baby’s development. If you are not treated in time, mastitis can also cause serious harm to your body, mastitis can cause abscesses or sepsis, chills and high fever, which can be life-threatening, so if your breasts are distended and painful, you must pay attention and seek medical examination in time. Pay attention to wearing cotton underwear, do not wear too tight underwear, also need to pay attention to diet, do not eat cold spicy stimulating food.