Acute mastitis is a common type of breast disease in breastfeeding women, mostly related to poor breastfeeding habits that cause nipple cracking and milk stagnation. When combined with bacterial infection, acute purulent infection of the breast tissue occurs. At the beginning of the infection, the breast appears distended and painful, accompanied by local skin burning discomfort, and the milk should be emptied as soon as possible, and oral penicillin or cephalosporin anti-infection treatment should be given. When the infection is further aggravated and a breast abscess appears, you should immediately go to a regular hospital for breast surgery or general surgery to perform an incision and drainage of the breast abscess, and in daily life, you should develop a good breastfeeding posture and breastfeeding habits. Wash your nipples before and after breastfeeding to keep them locally clean, and avoid eating too much spicy, stimulating and fried food.