This is one of the major characteristics of Chinese stomach cancer patients at present, that is, most of them are found in the middle or late stage. The reasons for this are manifold. Firstly, in terms of the general environment, China is still a developing country with a large population, unbalanced development, unbalanced economy in different regions, and different health consciousness of the population. For example, the same is a high incidence of gastric cancer countries, our neighbors Japan and South Korea, the rate of early gastric cancer can reach more than 70% or even higher, this rate is about the rate of China’s mid-late gastric cancer, so why Japan and South Korea’s early gastric cancer rate is so high? This is mainly due to their good screening or census of stomach cancer, almost universal screening of stomach cancer. However, for our country, the population is too large, so it is very difficult to achieve universal screening. It is mainly due to economic factors, as well as people’s awareness, time issues, etc. that constrain the implementation of screening. The good thing is that our country is paying more and more attention to the early screening and prevention of many kinds of cancer, the road is winding, but the future is bright! The second is everyone’s health awareness. Generally speaking, many people, needless to say less developed areas, is a big city citizens, many abdominal discomfort, can be put on the past, their own pharmacy to buy some medicine to relieve the past. Although, nowadays, the high incidence of tumors, but it is not a common disease. The general mentality is, how can this kind of disease be on me, so it is often careless. When serious problems occur, such as unrelieved abdominal pain, persistent vomiting, or vomiting blood or black stools, etc., they realize the seriousness of the problem, and only then consider going to a large hospital for examination, and therefore, stomach cancer found at this time is basically in the middle or late stage. So, as the question suggests, how can early detection and prevention be done in daily life? The key is to raise health awareness and not to take a chance. Some people say, “I can’t go to the hospital for checkup whenever I have stomach discomfort,” which is also very reasonable. Common diseases of the stomach, such as gastritis and mild gastric ulcer, can also cause epigastric fullness, heartburn, and even intermittent stomach pain. These types of conditions are very similar to the manifestations of early stage stomach cancer. Then under what circumstances should you go to hospital for proper examination? Suggestions are as follows: 1. Those who have family history of gastric cancer, intestinal cancer and other digestive tract cancers. Some people ask what is meant by family history, that is, your closest relatives or close relatives who are related by blood have malignant tumors, which is having a family history. The closer the relationship, the higher the risk. If you have a family history of the above mentioned abdominal discomfort, it is recommended that you have a gastroscopy in a regular hospital. Here, we would like to remind you again that gastroscopy is a powerful tool to detect early gastric cancer, even though there is a little discomfort during the examination. 2.People who have obvious long-term bad life habits. For example, often eat quickly, often eat very hot food, often smoke and drink, often eat smoked and fire-roasted food, often high salt diet, often deep-fried and pickled food, and so on. 3, Infected with Helicobacter pylori bacteria and have not been treated. 4.Have had stomach surgery in the past, partial gastrectomy for whatever reason. Prone to residual stomach cancer, as the name suggests, the stomach left after the resection is more likely to grow cancer, the specific mechanism is not clear. 5.If you don’t have the above problems, but often have abdominal bloating, abdominal pain, and again, many times, recurring symptoms after relieved by oral medication, you should also check gastroscopy in time. Why it is emphasized again and again that the examination of early gastric cancer mainly relies on gastroscopy, because gastroscopy can visualize and clearly see the mucous membrane of esophagus and stomach, with or without ulcers, erosions, and occupancy, and it can take biopsy of the bad places and send them to pathology examination, so as to make clear whether it is inflammation or cancer. Besides, other common tests, such as gastrointestinal imaging, ultrasound, CT, MRI, etc., have too low diagnosis rate for early gastric cancer.