1, all diet must be sterile, must be steamed and boiled or microwave ding 2, with dexamethasone do not eat sugar, control of rice and noodles 3, with Menthol during the period do not eat high-fat greasy food, such as fat meat, offal, pig’s trotters, chicken skin, etc. 4, playing a large dose of methotrexate during the period due to the tendency to oral erosion, do not eat too hot food, do not bite the bone damage to the oral mucosa 5, usually avoid frying and frying fried food