Inverted nipples are the most common nipple deformity in adult women. Clinically, patients are often seen for aesthetic reasons, for interfering with breastfeeding, or for recurrent infections that are not easily cleaned and do not heal. The height of a normally developed nipple can be 0.7-0.9 cm, and in patients with nipple invagination, the nipple is below this standard, or in severe cases, sunken into the areola, making it impossible to correct by manipulation. The vast majority of patients with nipple entropion have congenital deformities, i.e., a history of many years, and the deformity can become more severe as the breast develops. Patients who require correction may seek outpatient surgical help. The surgical approach can be divided into two categories: (1) Incisional method: can solve the problem in one operation; however, it leaves a scar after surgery, has a higher surgical risk, has a higher probability of recurrence, and may affect breastfeeding. (2) external traction method: no scar after surgery, small surgical risk, low probability of recurrence, does not affect breastfeeding after surgery; but the course of treatment is longer, after a surgical placement of the corrector, it is necessary to maintain treatment for about six months, during treatment every 1-2 months to follow up in the hospital. If the nipple is recently found to be invaginated, tumor, infection, trauma and other factors can be considered, and you need to go to the hospital as soon as possible to get a clear diagnosis so as not to delay the condition.