Gastric ulcer is related to Helicobacter pylori infection, excessive gastric acid secretion, gastric mucous membrane damage, non-steroidal anti-inflammatory drugs, etc., and the medication needs to be chosen according to the specific cause of the disease. 1. Helicobacter pylori infection: Helicobacter pylori infection leads to gastric mucous membrane damage, causing gastric ulcers, and requires Helicobacter pylori removal treatment. Under the guidance of the doctor, a four-pronged program, such as omeprazole, bismuth potassium citrate, amoxicillin, clarithromycin and so on, should be chosen for treatment. 2. Excessive secretion of gastric acid: excessive secretion of gastric acid leads to the formation of ulcers in the gastric mucosa by digestion, which needs to be treated under the guidance of doctors, choosing drugs to inhibit gastric acid, such as omeprazole, rabeprazole and other drugs. 3. Protect gastric mucosa: increase the protective effect of gastric mucosa, reduce the stimulation and further damage of gastric acid, pepsin and food on the lesion site, the main application of drugs for gastric mucosa protective agent, such drugs can promote the healing of the already damaged gastric mucosa. Such as: magnesium aluminum carbonate chewable tablets, colloidal bismuth pectin capsule, aluminum thioglycollate suspension and so on. If because of gastrinoma and other reasons, may need surgical treatment. Gastric ulcer, it is recommended to go to the hospital in time for examination, clear diagnosis, treatment under the guidance of the doctor, to avoid blind use of drugs, aggravate the symptoms of gastric ulcer, resulting in adverse body reactions.