Wash your face and take a bath with gentle movements. Don't open your mouth or sing loudly for a month to avoid strenuous exercise or excessive massage of the surgical site. Generally, 3-5 days is the most obvious time for soft tissue swelling, and then the soft tissue swelling will obviously subside. On the 10 day, the facial swelling has basically subsided. Prevention of postoperative infection, fasting within two days after operation, mainly relying on infusion to maintain physiological needs. After 48 hours, liquid food, such as milk, juice, broth, etc. , began to be eaten. After 72 hours, you can eat semi-liquid food, such as yogurt, egg soup, rotten noodle soup, porridge and so on. Within a week, patients must maintain oral hygiene with mouthwash at least in the morning, noon and evening every day, and then gradually transition to a normal diet, but they can't eat hard food for one month.