1.Why regular gastroscopy is needed Among all kinds of cancers, stomach cancer is one of the most common cancers, and stomach cancer ranks first among digestive tract malignant tumors and third among systemic cancers in China. The detection rate of early gastric cancer in China is less than 10%, while in Japan, the detection rate of early gastric cancer can reach 70% due to extensive screening. The high incidence age of gastric cancer is 50-60 years old, but this year, the incidence of gastric cancer among young people and older people over 65 years old has a rising trend. And our province is a high incidence area of esophageal cancer, therefore, regular gastroscopy is especially important. 2.Who need regular gastroscopy? Those who have symptoms such as upper abdominal discomfort, vague pain, feeling of fullness after eating, loss of appetite, emaciation, weakness, poor swallowing, and black tarry stools; those who have original gastric disease and whose symptoms have changed or worsened recently; those who have chronic atrophic gastritis, especially those with intestinal epithelial hyperplasia or atypical hyperplasia, gastric ulcer, gastric polyp, pernicious anemia, post-gastrectomy and gastrointestinal cancer Those with a family history of high-risk; born in an area with a high incidence of gastric cancer or have lived in an area with a high incidence for a long time; symptoms such as abdominal pain, diarrhea (more than 2 weeks), difficulty in defecation or abdominal masses and a previous history of intestinal polyps; age 40 years or older.