Anti-Helicobacter pylori drugs have two main categories: 1, PPI inhibitors: also inhibit the hydrogen potassium ATP pump, is the clinical as long as the inhibition of gastric acid drugs. 2, antibiotic drugs: such as penicillin drugs amoxicillin capsules, anti-anaerobic drugs metronidazole tablets, quinolone drugs levofloxacin or norfloxacin and lincomycin, clindamycin drugs, or the second-line class of drugs, such as furazolidone, etc. Generally, for the treatment of H. pylori, the first-line drugs are preferred, such as amoxicillin, clarithromycin, metronidazole belong to the first-line drugs. Then if the treatment effect does not see relief, you can choose second-line drugs, such as levofloxacin or norfloxacin, quinolones or furazolidone, etc. For the treatment of H. pylori it should be noted that if the DPM titer is greater than 700 dpm/mmol or more, treatment can be given, and if it is less than 700 dpm/mmol or less, it can generally be clinically observed without special treatment.