Girls at the age of 15 have entered the stage of growth and development, if the nipple does not grow out at this time may be considered the existence of nipple invagination or nipple absence, for nipple invagination, can be corrected through methods such as manual pulling, for nipple absence, patients need to be corrected through surgery: 1, nipple invagination: most patients are congenital nipple invagination, some patients may be due to the premature use of The patient should go to the hospital in time, the doctor will be able to improve the nipple invagination with the help of instruments, negative pressure attraction on the nipple, but also very good. But if the nipple invasion is serious, may need to correct through plastic surgery, such as nipple reconstruction, because the patient is still in adolescence, so the general correction effect is better, so it is recommended that patients appear nipple invasion timely medical treatment, so as not to miss a good time for treatment; in addition, there may be due to inflammation, tumors, etc. invasion of the breast ligament pulling the nipple invasion, need to further detailed examination, for 2, nipple absence: such as congenital nipple absence, or nipple absence due to certain diseases at a young age when the nipple has not yet developed, usually no nipple from birth, patients can be corrected in adulthood through surgical methods, such as autologous fat filling, but can not be restored to normal physiological function, if the nipple is absent due to trauma or nipple scarring, etc. It is necessary to consult a doctor in time, and if necessary, you can choose a suitable way to carry out surgical treatment according to the doctor’s guidance. It should be noted that after surgery, patients should enhance post-operative care to avoid infection and maintain a balanced and comprehensive diet to facilitate recovery from surgery. In addition, nipple invagination should be corrected as early as possible, otherwise it may affect breastfeeding and may even lead to infection due to blockage of the mammary ducts, and the infection may persist for a long time.