Nipple invagination is a relatively common female breast development deformity that affects breastfeeding in severe cases and requires prompt treatment. The main pathological basis for nipple invagination is shortened milk ducts and poorly developed nipple base tissue. Surgery for these two causes is aimed at lengthening the milk ducts and filling the tissue void. The criteria for measuring the results of the surgery are no recurrence and the ability to breastfeed. After nearly a decade of experience and observation of the results of different procedures, the orthodontic device is the more desirable method to correct nipple invagination. The orthotic method is based on the theory that tissue is regenerative under long-term, continuous tension. The orthotic method is suitable for all types of nipple invagination. The most important feature of the brace method is that it does not destroy the ducts of the breast and does not affect the function of breastfeeding, so it is worth promoting. The disadvantage is that it takes more than six months to wear it for a long time.