1.Young people should pay attention to the problems of “stomach disease” when attending health check-ups, especially white-collar workers; 2.Young men and women who have already suffered from benign diseases such as gastritis and gastric ulcer should pay attention to the review of their conditions while undergoing medical treatment; 3.In case of new “changes” appearing, do not refuse gastroscopy and biopsy pathology to exclude tumor diseases. 3, when there are new “changes”, including prolonged stomach pain, changes in the nature of pain, changes in eating habits, changes in bowel habits, more attention should be paid to timely examination, do not refuse gastroscopy and biopsy pathology to exclude tumor lesions; 4, young women who appear abnormal “pregnancy reaction 4, young women who have abnormal “pregnancy reaction”, also need to do the examination to exclude “malignant lesions of the stomach”. Young people must know the knowledge of stomach cancer prevention Unhealthy habits such as lack of sleep and indiscriminate eating make stomach cancer approach young people. Therefore, to understand these risk factors, we can better grasp the knowledge of prevention. Change the wrong attitude of life – life for money before 40 years old, money for life after 40 years old. Change the inertia of bad thinking and pay attention to health checkups. ”Bad habits + work pressure + genetic factors” are considered to be the possible cause of high incidence of stomach cancer. The “list” of high-risk groups includes those who have been infected with Helicobacter pylori (HP), smoking and drinking, preferring salted and smoked food, having undergone stomach surgery, family tumor disease, family history of stomach cancer, pernicious anemia, type A blood, and so on. Lack of sleep and irregular diet are also important causes. The most important thing to snipe stomach cancer is screening. To control or even reduce the incidence of gastric cancer, it is crucial to carry out gastric cancer screening including HP screening, barium meal imaging or endoscopy in high-risk areas and high-risk groups. Special attention should be paid to high-risk groups; men over 40 years old (or 35 years old if they are addicted to smoking and alcohol) should go to outpatient clinics for gastroscopy if they have slight upper abdominal discomfort; in addition, those who have obvious and long-lasting indigestion symptoms and whose symptoms do not improve significantly after treatment, those who have chronic atrophic gastritis, pernicious anemia, gastric polyps, residual stomach and benign gastric ulcer should also pay extra attention. It takes about 3-4 years for gastric cancer to develop from early stage to progressive stage, therefore, high-risk people should go for examination every 6-12 months. Be alert to the early signs of gastric cancer. “Early symptoms of gastric cancer are insidious and often similar to gastritis and peptic ulcer, so more than 70% of gastric cancer patients are already in the middle and late stages when diagnosed, so that the total 5-year survival rate of gastric cancer is only 20%. However, if the gastric cancer is confined to the mucosal layer of the stomach wall, the 5-year survival rate can reach 95 percent.” If symptoms such as upper abdominal discomfort, vague pain in the heart fossa, feeling of fullness after eating; loss of appetite, emaciation, weakness; frequent vomiting of overnight food and gastric juice without bile; black tarry stools, etc. occur, you should seek medical treatment as early as possible without delay.