Gastric cancer is one of the digestive tract malignant tumors that seriously endanger human life, and is the fourth most common malignant tumor in the world, accounting for the third place of malignant tumor death rate worldwide. The survival rate of gastric cancer patients is closely related to the degree of progression of gastric cancer. In China, the 5-year cure rate of gastric cancer is only 20%, but the cure rate in Japan can reach 80%. Why is the cure rate of stomach cancer in Japan so high? If it is because of the medical technology, then the medical technology in Europe and America is advanced enough, and the cure rate in Japan is also much higher than that in the United States. So medical technology is not one of the main factors. After research, we found that the main reason why the cure rate of stomach cancer in Japan is so high is early screening and early detection. How to detect stomach cancer early? Stomach cancer has no obvious symptoms in early stage or only some mild symptoms, and most of the patients have basically developed to advanced stage when they arrive at the hospital. In recent years, medical experts in China have formulated an expert consensus on early gastric cancer screening in China, which will greatly improve the diagnosis rate and cure rate of early gastric cancer. Who needs gastric cancer screening? Those who are ≥ 40 years old and meet any of the following criteria are recommended to be screened: 1. people in areas with high incidence of gastric cancer; 2. people with Hp (Helicobacter pylori) infection; 3. people with pre-cancerous gastric diseases such as chronic atrophic gastritis, gastric ulcer, gastric polyp, post-surgical residual stomach, hypertrophic gastritis, pernicious anemia; 4. first-degree relatives of gastric cancer patients; 5. people with other high-risk factors for gastric cancer (high salt, pickled diet, smoking, heavy drinking, etc.) smoking, heavy alcohol consumption, etc.). What is the gastric cancer screening scoring system? The early gastric cancer screening program is based on blood sampling for pepsinogen, gastrin and H. pylori antibodies, and combined with age and gender, a comprehensive score can be used to screen out people at high risk for gastric cancer. Note: High risk group of gastric cancer (17-23 points), medium risk group of gastric cancer (12-16 points), low risk group of gastric cancer (0-11 points) Endoscopy and follow-up will be performed for medium and high risk group, and gastroscopy will be performed at least once a year for high risk group, and at least once every 2 years for medium risk group. Those who are really found to have early cancer can be treated with endoscopic surgery. This can not only improve the early detection rate of gastric cancer, but also reduce the unnecessary endoscopy for the low-risk group. What are the new technologies for endoscopic screening? Endoscopy and endoscopic biopsy are the current gold standard for the diagnosis of gastric cancer. Screening out high-risk groups of gastric cancer by non-invasive diagnostic methods, followed by purposeful endoscopic precision examination is the diagnostic strategy for early gastric cancer screening. Based on general white light endoscopy, endoscopic precision examination of early gastric cancer can observe the whole gastric mucosa comprehensively and clearly, be familiar with the mucosal characteristics of early gastric cancer, and discover suspicious lesions such as local mucosal color and surface structure changes, etc. Special endoscopic examination techniques such as pigmented endoscopy, electronic staining endoscopy, magnifying endoscopy and confocal laser microscopy can also be used to enhance the endoscopic manifestation of early gastric cancer, which can not only improve the It can not only improve the detection rate of early gastric cancer, but also provide information on lesion depth, scope, histopathology, etc. Gastric cancer is not scary, and it is possible to achieve complete cure with prevention awareness, early detection and early treatment. Therefore, it is recommended that high-risk groups should be routinely screened after the age of 40. Meanwhile, they should pay attention to improving their living habits, avoiding the intake of high salt, smoked and barbecued foods and processed meat, eating more vegetables and fruits, and strengthening healthy exercise to prevent the occurrence of gastric cancer.