Sudden nipple pain is mainly considered to have two possibilities: First, acute nipple injury, most have a clear history of trauma, when the external force directly or indirectly impact on the nipple, causing trauma to the nipple and local tissues, nipple redness and swelling, acute inflammatory changes, nipple pain is intolerable, accompanied by ecchymosis of the surrounding skin. Secondly, acute mastitis, mostly seen in breastfeeding women, is an acute suppurative infection of the breast. When the infection extends to the nipple, the whole breast is red and swollen and accompanied by severe pain. Therefore, if nipple pain occurs suddenly, you should immediately go to the breast surgery or general surgery department of the regular hospital, to clarify the cause of the pain, and actively cooperate with the specialist for treatment, which can mostly be cured. At the same time in life should be a light diet, avoid eating spicy, stimulating food, while wearing loose, breathable underwear, wash the nipple in a timely manner, to keep the nipple of the local clean.