Gastritis quadruple therapy usually refers to anti-Helicobacter pylori quadruple therapy, 1 kind of proton pump inhibitor + 2 kinds of antibiotics + 1 kind of bismuth, the course of treatment is usually 10 to 14 days, which can be amoxicillin twice a day, 1g each time, clarithromycin twice a day, 0.5g each time, omeprazole twice a day, 20mg each time, bismuth potassium citrate twice a day, 0.3g each time. 1. Antibiotics include clarithromycin, amoxicillin, metronidazole, tinidazole, quinolone antibiotics, furazolidone, tetracycline, etc. The specific dosage of the medication is amoxicillin twice a day, 1g each time, clarithromycin twice a day, 0.5g each time. 2. Proton pump inhibitors include esomeprazole, omeprazole, lansoprazole, pantoprazole, rabeprazole, epprazole, etc. The specific dosage of the drug is omeprazole twice a day, 20mg each time, or pantoprazole twice a day, 40mg each time. 3. Bismuth including bismuth potassium citrate, bismuth pectin, the specific dosage can be bismuth potassium citrate twice a day, each time 0.3g. Gastritis quadruple therapy should be used under doctor’s guidance, do not use on your own.