1.Eat less fried food, dessert, spicy food, wine; 2.Keep bowel movement smooth; 3.Keep good sleep; Good sleep indicators: time (not less than 6 hours per night, the best sleep time at night 10:00-11:00), quality (no dreams, deeper sleep). 4, keep a happy mood; 5, avoid blind needling, scratching, to prevent the legacy of irreparable scars; 6, to prevent radiation, less use of computers.