Opinion advice: to develop a good dietary habits, dietary patterns, eat small meals, eat easy-to-digest soft food. Avoid eating raw, cold, hard rough, greasy, too much fiber food. Do not overeat. Avoid drinking strong tea, coffee, alcohol, etc.; eat less food that is easy to produce flatulence, such as potatoes, sweet potatoes, onions, boiled soybeans and so on. Quit smoking, do not eat spicy stimulating food.