1. Precautions before operation (1) Be prepared psychologically. Choose a reliable medical unit or doctor for the operation, so that you can feel confident and safe during the operation, eliminate fear, calm down and actively cooperate with the doctor to realize your good wishes. Don't blindly seek medical treatment, so as not to cause adverse consequences. (2) fully understand the common sense of rhinoplasty, read relevant books, and it is best to visit people who have already had surgery to understand the whole process of surgery. (3) There should be no (bacterial) lesions in front of the operation, such as folliculitis, furuncle, acne, acute ophthalmia, sinusitis, rhinitis and nasal vestibular furuncle. (4) In order to prevent infection, it is best for women not to have surgery during menstruation. (5) It is best to take a bath the day before the operation. Wash the dirt and grease off your face with soap on the day of operation to minimize the number of bacteria. You should also clean your nasal cavity before operation. There are other diseases in the body before operation, which leads to low resistance, and it is easy to cause infection during operation, which affects wound healing. (6) Patients with hypertension and diabetes should inform the doctor of their own condition in detail at the time of initial diagnosis, so that the attending doctor can confirm the plastic surgery and postoperative treatment plan. (7) Routine physical examination before operation to confirm good health and no infectious diseases or other body inflammation. (8) Do not take drugs containing aspirin within two weeks before plastic surgery, because drugs will reduce platelet coagulation function. (9) Men should quit smoking one week in advance. 2. Precautions after operation (1) Keep the wound dressing clean, and the wound can't get wet before taking out stitches, and it can only get wet 2 days after taking out stitches. (2) Take out the gauze stuffed in the nasal cavity 2 hours after operation, and gently wipe off a small amount of oozing blood with a sterile cotton swab. (3) The swelling of the skin around the nose was obviously within the normal range within 3 days, and then gradually subsided. Don't rub your nose or bump your nose, lest you catch a cold and have a runny nose. (4) Taking a semi-supine position after operation is beneficial to blood circulation, drainage of nasal congestion and effusion, and reduction of swelling. Take off the nasal mask for 3 days, and take off the nasal clip membrane for one week. (5) Avoid external force around the nose within one month after operation, and do not wear frame glasses to prevent the prosthesis from shifting. (6) Take out stitches in strict accordance with the date written in the doctor's advice. It usually takes 6 ~ 7 days, and premature stitches are not allowed. (7) Avoid spicy food, ginseng and other blood-activating supplements. (8) Take antibiotics according to the doctor's advice after operation. (9) The swelling was obvious 2 ~ 3 days after operation, which was a normal reaction. Generally 10 days or so becomes more natural. If the recovery progress is slow, it will take about 2 ~ 3 weeks.