H. pylori, or HP for short, is very common in China, as statistics show that more than 60% of the population is infected with HP. Many people who are infected with HP do not have any symptoms, but are found to have positive HP antibodies in physical examinations or positive HP in gastroscopy, and some people with active gastritis or peptic ulcers will have some symptoms after being infected with HP. Although HP infection is very common and the population is huge, there is no need to worry about the occurrence of gastric cancer. Although there is evidence that gastric cancer has a certain relationship with HP infection, it will only evolve slowly from non-atrophic gastritis to atrophic gastritis, and then further to severe atrophic gastritis, and then gastric cancer will occur in 0.5% of severe atrophic gastritis every year, so it is really a long way between HP infection and gastric cancer. There is also a lot of evidence that the incidence of gastric cancer in areas with high HP infection rate is not high, and there is no inevitable parallel between the two.