Breast pus during breastfeeding needs to be treated with incision and drainage and daily dressing changes, and then it will gradually heal, if it is allowed to develop, septicemia may form, and it will not heal on its own. The reason for this is that acute mastitis is not treated reliably, leading to further development of the inflammation and the development of suppurative breast infections. If antibiotics are given promptly in the early stages of acute mastitis, such as penicillin or cephalosporin antibiotics, suppuration of the breast can be avoided. Because of the lack of timely treatment or poor therapeutic measures, the emergence of breast suppurative infection, can appear local fluctuating sensation, need to be treated promptly according to the abscess.