Drugs commonly used for gastrointestinal bleeding include gastric mucosa-protecting drugs, drugs that inhibit gastric acid secretion, growth inhibitors and coagulants, as follows: I. Drugs that protect the gastric mucosa, gastric mucosa-protecting agents can form a protective layer on the surface of the mucosa, and there are three main categories: 1. colloidal bismuth agents, which have colloidal properties, such as aluminum carbonate gel. 2. prostaglandins and their derivatives, such as misoprostol. 3. aluminum thioglycollate, Gifaster, etc. Second, drugs that inhibit the secretion of gastric acid: the main lazole drugs, such as omeprazole, rabeprazole, gastric acid can easily cause damage to the gastric mucosa, so drugs that inhibit gastric acid are often used in combination with drugs that protect the gastric mucosa. Third, growth inhibitors: can reduce bleeding by reducing the blood supply to the gastrointestinal tract. Fourth, coagulant drugs: for gastrointestinal bleeding due to the lack of coagulation factors can be taken coagulant drugs.