Not everyone has H. pylori, the detection rate varies from place to place, as do the habits of the person being examined, with large individual differences and a positive rate between 10-50%, meaning that more than half of the population, does not have this pathogen. The incidence of gastritis and gastric cancer, after the infection of this pathogen, increases significantly, and once diagnosed, even if there are no symptoms, it is necessary to do anti-infection treatment. In addition, because this bacterium is parasitic in the pylorus of the stomach, sometimes in the form of a spiral, sometimes in the form of a rod, so called H. pylori, because this bacterium in the carbon 13 or carbon 14 urea breath test, DPM greater than normal may lead to gastric ulcers, and may even lead to gastric cancer, so H. pylori drug treatment is necessary. For a negative H. pylori test, no special treatment is needed, so not everyone has it.