Nipple reduction surgery is relatively less invasive because the tissue removed or the area of local surgery does not cause much damage to the body. But it is also a more demanding and delicate surgery, in the nipple reduction surgery process, the surgical design is very important, for the doctor’s operation requirements are also very strict. For nipple reduction surgery, the following risks may be brought about: 1. Infection: If the environment of the surgery is not strictly sterilized, there is a possibility that the wound may become infected during the operation, redness, swelling and inflammation. Once the wound is found to be infected, you must immediately seek medical attention to avoid more serious risks; 2, slow wound healing: if the doctor in the operation caused relatively large local damage, poor tissue blood flow or postoperative infection, may lead to slow wound healing, and the healing wound will also leave scars; 3, hematoma, necrosis: nipple reduction and conventional plastic flap surgery, the same, to do preoperative design In the case of nipple height and diameter reduction, small flaps will be formed, and these flaps are cross-sutured and combined to form a new nipple. If the flap is not designed properly or there is hematoma formation later, it may affect the blood flow of the flap and even lead to nipple necrosis in severe cases; 4. Sensory injury, mammary duct injury: mainly due to injury to the innervation nerve of the nipple; 5. Bilateral asymmetry: mainly due to underestimation of the resection volume.