The clinical manifestations of acute gastroenteritis are mostly diarrhea, nausea, abdominal pain and vomiting, often due to unhygienic food or irritation of the stomach and intestines by heat or cold. In addition, parasites in spoiled food and unclean water may also cause intestinal infections. Here we introduce some common sense of dietary regimen. The actual fact is that you will be able to get a lot more than just a couple of days to get a lot more than just a couple of days. At this time should be fasting, so that the gastrointestinal tract to rest completely, rely on intravenous fluids to replenish water and electrolytes. In milder cases, patients can drink sugar saline to replenish water and salt and correct water and salt metabolism disorders. 2. Fluid diet Thin rice or gruel, and plenty of water should be drunk to avoid dehydration caused by diarrhea. Excessively frequent vomiting and defecation will reduce the water and electrolytes of body tissues. Therefore, increased fluid intake is necessary to compensate for the loss. Fluids contain a lot of sugar and electrolytes (potassium, sodium), which can also help reduce diarrhea. 3, less slag semi-liquid diet After smooth transition of liquid diet, it can be changed to low-fat less slag semi-liquid diet, still should be small amount of meals, can be 5 to 7 meals per day, the amount of food at the beginning of each meal does not exceed 300 ml is appropriate, and then gradually increase the amount. It is best not to use high-fat, high-sugar and strongly stimulating food. Forbid to eat cold food. Optional foods include: minced chicken, fish, lean pork, shrimp, eggs, skim milk, tofu, carrots, potatoes, winter squash, zucchini, cauliflower, congee, dragon’s beard noodles, small noodle slices, rice cakes, steamed buns, etc. 4, avoid greasy diet Avoid greasy and citrus foods because they may aggravate the condition. After vomiting, do not drink water or drinks immediately and wait for at least half a child before frequent intake of small amounts of liquid in small sips. Patients should not add solid foods to their diet until the symptoms of acute gastroenteritis have disappeared. Symptoms of gastroenteritis usually subside within 2 days. Eating large meals during the illness is not recommended because the stomach is not yet able to properly digest solid foods. It is important to eat small meals frequently every day. After 10-15 days, the patient can eat cooked vegetables, fruits and small amounts of low-fat diet.