Nipple redness, swelling, pain is relatively rare in the clinic, the main etiology of two: first, traumatic factors, if the external forces directly acting on the nipple, resulting in the nipple local tissue damage caused by the process of acute inflammation, which can be manifested as nipple bloody fluid or tissue fluid oozing out of the nipple, nipple around the tissue is normal. Treatment can be given to dilute iodine volts to disinfect the nipple local, keep the nipple clean, if necessary, can be coated with Bactroban or erythromycin ointment, can be cured. Second, acute nipple inflammation, common in breastfeeding, mostly bacteria invade the cracked nipple, resulting in acute purulent infection of the nipple tissue, manifested as redness and swelling of the nipple, and a small amount of pus can be seen oozing out. In the early stage of infection, the milk should be drained, and penicillin or cephalosporin antibiotics should be given for anti-infection treatment, while the nipple should be sterilized locally to keep the nipple clean. If the infection is further aggravated, it may develop into acute mastitis, which is manifested by a fluctuating lump that can be touched in the breast, and should go to the Breast Surgery Department of the regular hospital in time to perform incision and drainage of breast abscess.