When you have gastroenteritis, eat mainly light foods, such as fresh vegetables and fruits, such as bananas, pineapples, kiwis, celery, spinach, and oleaginous vegetables. As far as possible, do not eat fried, greasy food, spicy and stimulating food. Because this type of food tends to stimulate the mucous membrane of the stomach and intestines, causing edema, congestion and even erosion of the mucous membrane of the gastrointestinal tract, thus aggravating the symptoms of gastroenteritis. Some patients with gastroenteritis, accompanied by nausea and vomiting, will have gastrointestinal discomfort or gastrointestinal disorders. Therefore, patients with gastroenteritis should eat light food as much as possible, pay attention to drinking water properly, pay attention to activities, and do not overexert themselves. If accompanied by fever, anti-inflammatory and temperature-lowering treatments need to be given. If the repeated occurrence of gastroenteritis does not see relief, it is necessary to improve the blood routine, stool routine and other tests to clarify whether it is a viral infection or bacterial infection, and treat the symptoms according to the test results.