It is recommended to avoid greasy, cold, spicy and stimulating foods for gastroenteritis, and fasting may also be required for severe symptoms. Gastroenteritis refers to inflammation of the gastrointestinal tract caused by various reasons. Patients will experience digestive tract manifestations such as abdominal pain, bloating, nausea and vomiting, etc. It is recommended to avoid the following foods. 1. Greasy food: such as fried food, fatty meat, animal offal, etc., because the fat content is high, aggravating the burden on the gastrointestinal tract and causing aggravation of gastroenteritis. 2. Cold food: such as cold drinks, cold dishes, chilled fruits, etc., which are more stimulating to the mucous membrane of the gastrointestinal tract and lead to aggravation of the condition. 3. Spicy and stimulating foods: such as chili peppers, garlic, raw onions and other foods, will stimulate the mucous membrane of the gastrointestinal tract, aggravating the symptoms of gastroenteritis and the progress of the disease. The diet of patients with gastroenteritis should be light, easy to digest, and follow the doctor’s instructions for standardized treatment, so as not to delay the condition.