Helicobacter pylori can be detected by various means such as breath test, rapid urease test, and fecal search for Helicobacter pylori antigen. At present, there are many ways to detect H. pylori infection, commonly used methods include breath test, according to the different carbon markers, can also be divided into carbon 13 breath test and carbon 14 breath test; also through the rapid urease test, feces to find H. pylori antigens, blood serum H. pylori antibodies and so on. Breath test or rapid urease test is generally recommended, while fecal antigen search is not commonly used, and blood test for serum H. pylori antibody does not represent the current infection.