Seven-year-old girl nipple pain may be due to breast development, mastitis and other reasons, should go to the hospital to do gonadotropin level testing, breast ultrasound and other tests to determine the cause of the disease and then targeted treatment. Seven-year-old girl nipple pain may be due to the child’s breast development, need to go to the hospital to test the gonadotropin level, check the breast ultrasound. If the child’s breasts begin to develop, it is likely to be precocious puberty. Precocious puberty can adversely affect the child’s height and mental health, so it needs to be treated with drugs that inhibit the initiation of the gonads (e.g. leuprolide, danazol, etc.). If your child’s nipples are sore, accompanied by localized skin redness, swelling, and pain on pressure, consider that it may be an infectious disease such as mastitis. In addition to hospital treatment with antibiotics (such as amoxicillin, ampicillin, cephradine, etc.), parents should pay attention to maintaining local hygiene of the child’s nipples. It is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment. The above medications should be used under the guidance of a doctor, avoid self-medication.