Nipple swelling may be related to trauma, allergy, infection and other factors, can be directed to the cause of exposure to hot compresses, medication and other treatments to improve the symptoms. 1. Trauma: When the nipple is traumatized, the local tissues may become congested and swollen. At this time, hot compresses can be used to promote local blood circulation, so as to reduce the swelling of the purpose. 2. Allergy: people with allergies can be triggered to have an allergic reaction when they come into contact with allergens such as pollen and dust mites. At this time, you can apply boric acid solution and potassium permanganate solution locally. Taking anti-allergy drugs such as paracetamol and loratadine as prescribed by the doctor can also help improve the symptoms. 3. Infection: Women are prone to nipple infections during breastfeeding. The causative organisms are mostly bacteria. Antibiotics such as levofloxacin and amoxicillin can be used as prescribed to control the inflammatory response. There may be other clinical reasons such as tumors that can lead to swollen nipples. It is recommended to go to the breast surgery department of the hospital as soon as possible to identify the specific cause of nipple tumor and receive treatment for the cause.