Patients can take proton pump inhibitors, H2 receptor antagonists, gastric mucosal protectants, gastric stimulants and other gastric drugs under the guidance of a doctor to nourish the stomach and protect the stomach. 1. Proton pump inhibitors: mainly inhibit gastric acid secretion, protect the gastric mucosa, can be widely used in acute and chronic gastritis, gastric ulcer. Commonly used drugs are omeprazole, pantoprazole, lansoprazole and so on. 2. H2 receptor antagonists: common clinical drugs are cimetidine, ranitidine, famotidine, nizatidine, etc. Such drugs have the effect of inhibiting gastric acid, and have the effect of nourishing the stomach and protecting the stomach for patients with excessive gastric acid secretion. 3. Gastric mucous membrane protector: this drug can directly cover the surface of the mucous membrane, with the role of protecting and repairing the gastric mucous membrane. Commonly used drugs are magnesium aluminum carbonate, aluminum thiosulphate, bismuth potassium citrate, colloidal bismuth pectin and so on. 4. Gastric stimulants: commonly used drugs include domperidone, itopride, mosapride, etc. These drugs can promote gastrointestinal peristalsis to improve indigestion, bloating and other uncomfortable symptoms. It is recommended that patients according to their own situation, under the guidance of the doctor reasonable use of drugs to protect the stomach.