胃癌是消化道最常见的恶性肿瘤 ,具有较高的死亡率。有关胃癌的发生 ,目前认为与多因素相关。自从人们发现幽门螺杆菌 ( Helicobacter pylori,Hp)以来 ,该菌与胃癌的关系已受到人们的广泛关注。大多数学者认为 :胃癌可能是Hp长期感染与其它因素共同作用的结果。世界卫生组织已 Gastric cancer is the most common malignant tumor of the digestive tract, with a high mortality rate. The occurrence of gastric cancer, currently considered to be associated with multiple factors. Since the discovery of Helicobacter pylori (Hp), the relationship between this bacterium and gastric cancer has received extensive attention. Most scholars believe that: gastric cancer may be the result of long-term Hp infection and other factors together. WHO has