Gastric cancer is a common malignant disease in clinical practice and is generally associated with Helicobacter pylori infection. Worldwide, the incidence rate of digestive system tumors is the highest, about 50%-60%, and the average age is only about 33 years old, ranking third among all tumor incidence rates. The mortality rate is also relatively high. The annual incidence rate as well as mortality rate of gastric cancer in China accounts for about 1/2 of the world, and the incidence rate in rural areas is higher than urban areas, and the incidence rate in remote areas is higher than developed areas. In daily life, we can pay attention to advance prevention, such as staying away from tobacco, avoiding overeating and eating too spicy, stimulating and greasy food.