The drugs used to treat gastroenteritis are drugs that inhibit gastric acid secretion, protect the gastric mucosa, anti-inflammatory drugs, and drugs that adjust gastrointestinal dysfunction, as follows: First, there are three main drugs that inhibit gastric acid secretion, including colloidal bismuth, which can form a layer of colloid, such as aluminum carbonate gel. There are also prostaglandins and their derivatives, such as misoprostol, as well as aluminum sulfate and gefalte. Second, drugs to protect the gastric mucosa, mainly for the class of drugs, including omeprazole, rabeprazole, pantoprazole, drugs to protect the gastric mucosa is often used in combination with drugs to inhibit the secretion of gastric acid. Third, anti-inflammatory drugs, if the gastroenteritis is caused by bacterial and viral infections, you need to take anti-inflammatory drugs, commonly used are sarsen drugs and montelukast. Fourth, the adjustment of gastrointestinal dysfunction drugs, if the patient has abdominal distension, abdominal pain, indigestion symptoms, need to take such drugs.