The dietary principle of patients with enteritis is 1. Foods with less fiber and low fat can promote intestinal peristalsis and stimulate the intestinal wall, but they are not easy to digest and are unfavorable to the intestine, so they should be restricted. 2. Pay attention to supplement protein and vitamins. 3. If there is dehydration and low sodium in chronic enteritis, you should supplement light salt water in time, eat vegetable leaf soup, and supplement the loss of water, salt and vitamins. 4. When the exhaust and diarrhea are too strong, reduce sugar and easily fermented foods, such as potatoes, beans and milk. 5. Persimmon, pomegranate and apple all contain tannic acid and pectin, which have astringent and antidiarrheal effects. Chronic colitis can be eaten in moderation. 6. Patients with chronic enteritis are weak and have poor resistance, especially the gastrointestinal tract is easy to be complicated with infection. It is necessary to pay more attention to food hygiene, not to eat cold, hard and spoiled food, and to ban alcohol and spicy condiments.