The most common methods used clinically for H. pylori detection are carbon 13 breath test and carbon 14 breath test. The positive value of carbon 13 breath test is greater than 4 and the positive value of carbon 14 breath test is greater than 100, so H. pylori detection 1400 is considered to be a carbon 14 breath test examination and 1400 is considered positive. H. pylori positive need to kill H. pylori treatment, according to the latest Chinese guidelines, kill H. pylori to take quadruple therapy, the course of treatment for 14 days. Common quadruple therapy drugs are mainly proton pump inhibitors, such as omeprazole, lansoprazole, rabeprazole, plus bismuth, such as bismuth potassium citrate, bismuth pectin, etc., plus two antibiotics, the choice of antibiotics can be amoxicillin plus furazolidone, amoxicillin plus clarithromycin or amoxicillin plus levofloxacin, etc.