Gastric diseases mainly include functional dyspepsia, gastritis, gastric ulcer, gastric cancer, etc. The main use of drugs to inhibit gastric acid secretion and protect gastric mucosa. 1. Patients with functional dyspepsia, gastritis, gastric ulcer can use the following drugs under the guidance of doctors. Proton pump inhibitors (omeprazole, lansoprazole), H2 receptor antagonists (famotidine, cimetidine) and other drugs can inhibit gastric acid secretion. Drugs such as bismuth potassium citrate and weak antacids (aluminum thioglycollate, aluminum phosphate) protect the gastric mucosa. Gastrointestinal stimulant drugs, such as domperidone, promote gastric emptying. If combined with Helicobacter pylori infection, quadruple therapy can be used, i.e. one proton pump inhibitor + two antibiotics (metronidazole, amoxicillin) + one bismuth agent. 2. Gastric cancer: gastric cancer is mainly treated by surgery, which can be combined with chemotherapy drugs and targeted drugs. Common chemotherapeutic drugs include oxaliplatin and vinblastine. Common targeted drugs include trastuzumab. The above drugs are recommended to be used under the guidance of a doctor. Patients who are diagnosed with gastric disease are recommended to visit the hospital for timely treatment.