I. Dietary therapy aims to prevent and correct the imbalance of water and electrolyte balance; supply sufficient nutrition and improve the nutritional status. Avoid mechanical and chemical stimulation, so that the intestinal tract can get proper rest, which is conducive to the early recovery of the disease. Second, the principles of dietary therapy (a) acute diarrhea dietary therapy 1, the acute period of fasting: acute water diarrhea period requires temporary fasting, so that the intestine completely rest. If necessary, by intravenous fluids to prevent excessive water loss and dehydration. 2, light and liquid diet: those who do not need to fast, it is appropriate to give a light and liquid diet at the beginning of the disease. Such as protein water, fruit juice, rice soup, thin noodle soup, etc., mainly salty. Forbidden in the early stages of milk, sucrose and other fluid diet easy to produce gas. Some patients do not adapt to milk, often aggravate diarrhea after taking milk. 3, adjust the diet according to the condition: the number of bowel movements is reduced, and the symptoms are relieved and changed to a low-fat liquid diet, or a low-fat semi-liquid diet with less residue, fine and easy to digest, such as rice porridge, lotus root powder, rotten noodles and noodle sheets. 4, diet choice: after the basic cessation of diarrhea, you can supply low-fat, less residue semi-liquid diet or soft food. Small and frequent meals to facilitate digestion; such as noodles, porridge, steamed buns, rotten rice, lean mashed meat, etc.. Still, vegetables and fruits that contain more crude fiber should be appropriately restricted, and then gradually transition to a general diet. Shanghai Longhua Hospital, Department of Spleen and Gastroenterology, Dai Yancheng 5, vitamin supplementation: pay attention to vitamin B complex and vitamin C supplementation, such as fresh orange juice, fruit juice, tomato juice, vegetable soup, etc. 6, dietary taboos: prohibit alcohol, avoid fatty meat, hard and coarse fiber containing vegetables, cold fruits and vegetables, fatty snacks and cold drinks, etc. (B) chronic diarrhea dietary treatment 1, low-fat diet with less residue: about 40g of fat per day, too much is not easy to digest and increase the burden on the gastrointestinal tract, stimulating gastrointestinal motility aggravate diarrhea. Therefore, vegetable oil should also be limited, and pay attention to the cooking method to steam, boil, blanch, braise, burn, etc., prohibit oil frying, stir-frying, slippery, etc.. Available foods are lean meat, chicken, shrimp, fish, soy products, etc. Pay attention to less slag, coarse fiber food can stimulate intestinal peristalsis, so that diarrhea aggravated, when the number of diarrhea is better to temporarily do not eat or eat as little as possible vegetables and fruits, can give fresh juice, tomato juice to supplement vitamins; less slag diet can reduce intestinal peristalsis, reduce diarrhea, so it is appropriate to eat fine noodles, porridge, rotten rice. 2, high protein and high caloric energy: chronic diarrhea is long and often recurrent, affecting the digestion and absorption of food and causing the consumption of stored caloric energy in the body. To improve the nutritional status, a high-protein, high-calorie diet should be given, and the method of gradual increase, such as increasing too quickly, nutrients can not be completely absorbed, but may increase the burden on the gastrointestinal tract. Can supply protein lOOg / d, caloric energy 10, 46 ~ 12, 55MJ (2500 ~ 3000kcal). 3, contraindicated foods: such as coarse grains, raw and cold fruits and vegetables, cold mix, leeks, celery, squash, etc. containing more crude fiber; hard and indigestible meat such as ham, sausage, cured meat, etc.; stimulating foods such as chili, spirits, mustard, chili powder, and fatty meat, crispy snacks and other high-fat foods.