Pre-operative precautions: 1. Patients without bleeding disorders and active or progressive diseases of the heart, lungs, liver and kidneys and other important organs, such as those suffering from hypertension, diabetes or infectious diseases, need to have surgery after their conditions are under control. 2.Patients who have been taking steroid hormones and aspirin for a long time should preferably stop using them one week before surgery, please consult the relevant doctor. 3.Surgery is not recommended for those who have the following nasal conditions: the presence of infected foci such as boils and folliculitis on the skin of the nose, acute sinusitis, allergic rhinitis attack period, history of acute nasal trauma within 3 months, etc. 4.Please avoid menstruation for female patients; suspend surgery during the pre-pregnancy period (3 months) and late pregnancy period (3 months). 5.Please consider avoiding important social occasions during this period when arranging the surgery because the local slight swelling may last for several weeks after the surgery and the shape of the nose is slightly unnatural at this time. 6.Because the process of nasal bone osteotomy and post-operative recovery is complicated, sometimes it is difficult to control accurately, except that there will be a certain degree of asymmetry on both sides or local unevenness in the end, which may need to be repaired after six months. 2.Moderate to severe: the overall widening of the nasal dorsum, or accompanied by hump, need to perform nasal bone osteotomy nudging surgery. Anesthesia: local anesthesia: local injection of anesthetic at the operation site, no additional charge; intravenous general anesthesia assist: long operation time, many sites, or poor pain tolerance, intravenous administration of drugs, no tracheal intubation, additional charge (according to the length of the operation 1500-3000 yuan). Pre-operative preparation: 1, routine examination: (can be done on the day of surgery, local anesthesia without fasting, intravenous general anesthesia fasting laboratory tests; foreign patients to save time can also be completed in advance in the local tertiary hospital, valid for 3 months) local anesthesia surgery: routine blood, urinary routine, coagulation four, cosmetic immune four (hepatitis B, C, syphilis, AIDS); intravenous general anesthesia surgery: the above six items, liver and kidney function, fasting blood sugar, electrocardiogram. 2, those who choose local anesthesia normal diet, those who choose intravenous general anesthesia auxiliary 6 hours of preoperative fasting, 4 hours of abstinence from water. 3. Pay attention to the cleanliness of the operation area before surgery, cut short nasal hair and beard, and do not wear makeup. Post-operative precautions: 1. Local 4℃ ice pack around the nose (ice bag, refrigerated bag of milk, etc.) for 2 hours, head high and semi-recumbent position, no hot packs for 3 days after surgery. 2.The cotton ball stuffed in the nostril can be removed the next day after surgery; the external nasal splint is fixed for 1 week. 3.Avoid getting water on the wound, avoid blowing and rubbing the nose, and avoid bending and lowering the head. 4.Don’t drink hot drinks on the day after surgery, avoid smoking, alcohol, fish and shrimp, spicy and stimulating food for one week. 5.Take oral antibiotics for 3 days to prevent infection, and take painkillers if necessary (such as painkillers, tramadol, etc.). 6.Removal of stitches 5-7 days after surgery (according to doctor’s orders). 7.Oedema, bruising, and bruising in the postoperative area are normal, and most of them will gradually subside after 1-2 weeks. If you find swelling and bruising or increased pain, affecting ventilation, etc., please contact the doctor immediately. 8.Avoid wearing frame glasses for 3 months, no rubbing and external impact on the nose. 9.Please contact the doctor for follow-up after six months.