我国是胃癌的高发区，其发病率、死亡率均名列前矛，而且还有增高和年轻化趋势。目前认为，胃癌的发生是幽门螺杆菌（HP）、饮食及遗传因子多因素相互作用、相互促进的结果。HP的感染，像胃癌一样，常常密集流行在经济不发达的国家中；而在欧美、日本等发达国家和地区，伴随着H China is a high-risk area of ​​gastric cancer, and its incidence and mortality are among the top spears, and there are also trends of increase and younger age. At present, it is believed that the occurrence of gastric cancer is the result of the interaction and mutual promotion of multiple factors of Helicobacter pylori (HP), diet, and genetic factors. HP infections, like gastric cancer, are often intensively spread in economically underdeveloped countries; in developed countries and regions such as Europe, America, Japan, and so on, accompanied by H