1. After mandibular angle surgery, patients are required to stay in the hospital for observation for 3-5 days. 2. Do not wash your hair within one week after mandibular angle surgery. 3. After mandibular angle surgery, the head mask is bandaged under pressure for 5 to 7 days. It cannot be disassembled during the process unless there are special circumstances. If it is disassembled, it should be bandaged in time. Pay attention to check whether the skin is crushed. If a drainage strip is placed on the intraoral wound, it should be bandaged in time. Removed 48 hours after surgery; 4. Any type of supplements or drugs that may accelerate blood circulation, reduce coagulation mechanism, or affect wound healing, such as ginseng, aspirin, blood-activating drugs, weight-loss drugs, menstruation-regulating drugs, etc. are prohibited, if necessary , should consult the operating surgeon. 5. Eat liquid food until the fifth day after mandibular angle surgery, and try to avoid biting hard objects for three months; 6. Start gargling with mouthwash 6 hours after mandibular angle surgery until the sutures are removed; 7. Mandibular angle surgery Facial beauty massage is not allowed within the next three months, and the surgical area is not allowed to be rubbed. 8. The stitches will be removed 7 days after the mandibular angle surgery. Eat less spicy food and try to eat a semi-liquid diet.