There are no triple drugs for chronic gastritis alone, but if chronic gastritis is combined with H. pylori infection, quadruple drugs can be applied for H. pylori eradication treatment. Commonly, quadruple drugs include gastric acid inhibiting drugs, which are proton pump inhibitors + two antibiotics + bismuth. Proton pump inhibitors usually use omeprazole, lansoprazole, pantoprazole, rabeprazole, esomeprazole, one of them plus clarithromycin, amoxicillin, levofloxacin, furazolidone, metronidazole and other drugs of the two in the addition of bismuth, with the combination of quadruple drugs to carry out the regular bactericidal treatment. Patients with chronic gastritis should stop taking the medication after ten to fourteen days, and then repeat the breath test one month later to observe whether the Helicobacter pylori bacteria are killed.