In order to prevent postoperative infection, we should fast for two days after mandibular angle plastic surgery, mainly relying on infusion to maintain physiological needs. After 48 hours, start eating liquid food, such as milk, juice and broth. After 72 hours, you can eat semi-liquid food, such as yogurt, egg soup, rotten noodle soup, porridge and so on. Gradually transition to a normal diet in the future, but don't eat hard food for a month. For details, please consult Yunnan Renai Plastic Surgery Hospital.