Gastroenteritis is divided into the following categories: 1. Gastritis is mainly with symptoms of abdominal pain and bloating, without obvious diarrhea, and can be treated with drugs such as omeprazole and domperidone. 2. Enteritis is mainly with symptoms of diarrhea, which is caused by indigestion, without fever, and can be given multi-enzyme tablets to help digestion, and then bifidobacterium and glutamine enteric capsules to regulate the intestinal tract. If combined with fever, there may be a bacterial infection, and patients with significant diarrhea are given anti-infective treatment with flavopiridol, levofloxacin, and PPA. It is important to pay attention to the diet when it comes to gastroenteritis, with a light diet and no spicy, greasy or irritating food.