There are two types of nipple invagination, congenital and acquired2. The nipple invagination formed later in life should be noted for diseases such as breast cancer, chronic mastitis, and granulomatous mastitis. Here we mainly talk about congenital nipple invagination. Congenital nipple invagination (some nipples are flap-like and partially invaginated) is not only unattractive, affects postpartum breastfeeding and is unfavorable to infant growth and development, but is often seen clinically as a result of various breast diseases caused by nipple invagination, mainly dilated milk ducts, parareolar abscesses, plasmacytoid mastitis and so on. This leads to repeated redness, pain, abscess formation, pus formation, and morphological changes in the breast, which can be very painful for patients. This is especially true for those who are unmarried or married and have not had children, who are in physical pain and mental anguish! Remind women with nipple invagination, themselves or their daughters after puberty, should not ignore the nipple invagination and should correct it in time. If the above symptoms have already appeared, it is even more important to visit a breast specialist for timely treatment. The consequences of mastectomy as a last resort due to long term recurrent chronic inflammation are avoided. To introduce an economic, simple and practical method of nipple invagination correction: 1, prepare a sterilized 10ml disposable syringe, nipple invagination is serious, nipple small choice of 5ml syringe; 2, the syringe nipple (joint needle) side cut off with a knife, the truncated surface polished. 3, the syringe in the shape of a barrel will be snapped into the sunken nipple, pull the live plug to suck out the nipple and maintain the negative pressure state for more than 30 minutes; 4, repeatedly every day as above treatment, each time the sucked out nipple white discharge clean, and persist until the sunken nipple can be gently lifted by hand.