Drugs to treat gastroenteritis mainly include gastric mucosal protective agents, such as colloidal bismuth, acid suppressants such as aluminum bicarbonate and omeprazole, digestive aids such as secreting agents, and drugs to promote gastrointestinal peristalsis such as domperidone. These drugs need to be used specifically in clinical practice. In case of acute gastroenteritis, anti-inflammatory drugs also need to be used to treat chronic gastroenteritis, Drugs need to be selected according to specific symptoms and signs. If there is an ulcer, it also needs to be treated. Usually, the ulcer is treated by eradicating Helicobacter pylori