Acute gastroenteritis is a clinical emergency caused by acute inflammation of the gastrointestinal mucosa. The main symptoms of patients are nausea, vomiting, body fever, abdominal pain and diarrhea. In addition to avoiding high-fat, spicy and cold foods and high-fiber foods, patients can eat noodle soup, steamed bread and other light and easy-to-digest foods. If a patient with acute gastroenteritis is properly cared for, he or she can usually resume a normal diet in about 2-3 days. This is because patients with acute gastroenteritis suffer from bacterial infection, which stimulates the gastrointestinal mucosa and affects gastrointestinal function and declines, and also affects the normal function of the patient’s digestive system, so extra attention should be paid to dietary care after the onset of the disease. In general, patients should be provided with a high-calorie, light and easily digestible liquid or semi-liquid diet with less residue, and in addition to porridge, soft rice, bread, pasta and leafy greens. However, it is important to avoid foods such as milk and eggs, which have a high protein content, but also a high fat content, which is difficult for patients to digest and absorb, especially in the early stages of the disease. In the dietary care of patients with acute gastroenteritis, attention should also be paid to the dietary principle of eating less and more meals, and after observing the gradual formation of stools, the transition from a liquid diet to a semi-liquid diet and then to a normal ordinary diet can be appropriate. In the process of daily diet need to pay attention to food hygiene, when eating fruits and vegetables should also pay attention to fully washed.