Most rhinoplasty is done in the nostrils, and no trace can be seen after operation. Implants are made of materials that are compatible with human tissues, such as silicone rubber and polytetrafluoroethylene. Rejection is extremely rare and easy to carve. Preoperative attention: 1, physical health examination: exclude possible medical diseases such as heart, lung, liver and blood, previous surgical history, medication history and allergic history. 2. The surgeon and the doctor should have a comprehensive and in-depth preoperative conversation to understand the size and steps of the operation, the speed of pain recovery, possible effects and possible risks; Doctors should know the patient's face, the motivation of the operation and whether the expectation of the operation is in line with reality. 3. Stop drinking one week before operation and stop using vasodilators such as aspirin and vitamin E..