1. Preoperative preparation (1) is in good health, and there are no organic diseases such as heart disease, hepatitis, nephritis and pneumonia. (2) No source of oral infection, such as dental caries, periodontitis, oral ulcer, etc. (3) Women's surgery should avoid menstrual period. (4) Routine blood and urine tests, chest X-ray, electrocardiogram and other routine health checks should also be done before operation. (5) Routine frontal and lateral photos of the skull are taken for postoperative comparison and curative effect evaluation, and three-dimensional ct of the skull can be done if conditions permit. X-ray film of maxilla was taken to understand the development degree of maxillary sinus. (6) Stop smoking before operation. Aspirin, birth control pills and some anti-inflammatory drugs can cause increased bleeding, so these drugs should be stopped for a period of time before surgery. 2. Pay attention after operation (1). Use antibiotics as appropriate according to the doctor's advice, and take oral painkillers to relieve pain if necessary. (2) Do not eat spicy or irritating food, such as cigarettes, wine, peppers, etc. (3) Ensure that the surgical site is clean to prevent infection. (4) Try to avoid violent facial expressions within one week after facial wrinkle removal. (5) Do not wear glasses for one week after rhinoplasty, and avoid strenuous exercise 1 day. The swelling was obvious on the third day after augmentation rhinoplasty, and began to decrease on the fourth day. (6) Keep your eyes clean after double eyelid surgery, and you can use eye drops to clean them. If you have vision problems, you should contact the doctor immediately. (7) Eat semi-liquid food within one week after oral surgery (including chin augmentation surgery, lip surgery, etc.). ), and you must rinse your mouth with mouthwash for 3-5 days after meals. (8) Take out stitches 3-7 days after operation, and pay attention to protect the stitches. (9) Follow the doctor's advice to the hospital for review after operation.