H. pylori generally have to eat at least a month to eradicate H. pylori, treatment and then carbon 14 breath test to understand whether there is eradication of H. pylori, if not then continue the next course of treatment. Now anti-H. pylori drugs are treated using quadruple therapy: first, the choice of two antibiotics, the choice of antibiotics is the use of amoxicillin, clarithromycin, metronidazole, ornidazole, levofloxacin and other drugs. Second, the choice of proton pump inhibitors, the representative drugs are omeprazole, pantoprazole, rabeprazole, estramiprazole. Third, the choice of a bismuth agent, such as bismuth potassium citrate and other drugs for combined treatment.