1.Energy and protein intake should be adequate. 2.Patients with anemia or protein-calorie malnutrition can be appropriately supplemented with high-quality protein, iron, vitamin C and vitamin B. 3.No smoking and no alcohol. 4.Eat less and more meals. 5.Eatable food: light, less oily, no or very little stimulating and easy to digest food. If you have iron deficiency anemia, you can use eggs, lean meat, pork liver, etc. in moderation. Increase fruits, fruit juices and fresh less dregs of vegetables. 6, prohibited foods: coarse grains, mixed beans, coarse fiber food, fatty meat, cream, fried/fried food, sucrose (with enteritis diarrhea, should not be used), milk (with enteritis diarrhea, should not be used), soy milk and related products (with enteritis diarrhea, should not be used); for those who have excessive secretion of stomach acid, only use thick broth, stimulating condiments such as chili, onion, curry, pepper, mustard, strong spices, etc., strong tea coffee, etc.