The nipple is not exactly the same in the clinic, the size of the nipple is about 0.2-0.4 centimeters, the size of the areola is about 3.5-4.5 centimeters, the height of the nipple is about 0.5-0.6 centimeters, which is within the range is normal. If it is obvious that one nipple is bigger than the other, it is recommended to perform surgical treatment. The purpose of surgical treatment is to partially excise the bigger nipple to achieve symmetry between the two sides. The biggest risk of surgery is the occurrence of nipple necrosis, once the nipple necrosis may affect the appearance of the nipple, the need for secondary reconstruction of the nipple, to achieve better clinical results. For patients with one big nipple and one small nipple, if there is no obvious impact on the appearance, no special treatment is needed, if there is an impact on the appearance of the person can be surgically excised, surgery if there is nipple necrosis need to be given to the nipple reconstruction.