There are 3 kinds of drugs that must be taken by patients with gastritis. Patients need to undergo relevant examinations to clarify the specific cause and nature of the disease, and to carry out cause-specific treatment as well as symptomatic treatment. 1, acute gastritis: mainly due to dietary stimulation, pathogenic infection and other reasons, the patient is more acute, manifested as pain in the upper middle abdomen, anorexia, nausea, vomiting and other symptoms, should be used for different symptoms corresponding to the drug treatment. For example, local hot compresses can be applied for abdominal pain, belladonna tablets and scopolamine can be used for severe pain, and metoclopramide can be injected for severe vomiting. In addition, cimetidine, ranitidine, can reduce gastric acid secretion; magnesium aluminum carbonate or aluminum thioglycollate, etc., can protect the gastric mucosa, the above drugs can be used at the discretion of the doctor’s guidance; 2, chronic gastritis: chronic gastritis caused by Helicobacter pylori is mainly allopathic treatment, the need for quadruple therapy, including four drugs, namely a proton pump inhibitor + a bismuth + two antibiotics. Proton pump inhibitors are commonly used omeprazole, lansoprazole, pantoprazole, rabeprazole, etc.; bismuth is bismuth potassium citrate, colloidal bismuth; antibiotics are amoxicillin, metronidazole, furazolidone, tetracycline, etc. The course of treatment is 14 days, must be a full course of treatment. In addition, patients with chronic gastritis can choose acid suppressants, gastric mucosal protectors, gastrodynamic agents, digestive enzyme preparations, etc. accordingly according to different symptoms. Patients with gastritis need to consult a doctor in a timely manner to clarify the specific cause and degree of inflammation through gastroscopy and breath test, and to administer medication in combination with the nature of gastritis, rather than self-medication to avoid masking the symptoms and aggravating the condition.