Although it is not the “king of cancers”, the current medical level is still unable to do anything about stomach cancer, which undoubtedly still belongs to the category of terminal diseases. As there are not many signs in the early stage of stomach cancer, 80% of the patients are already in the late stage when they are diagnosed, and even the most skillful doctors can not do anything about the late stage stomach cancer, and what they can do is to prolong the time of survival without any quality of life. For stomach cancer, the most valuable thing is to do preventive work in advance to avoid the occurrence of cancer, which involves what kind of people are prone to stomach cancer, if it is clear, then these people need to strengthen the preventive health care work. Through medical research, it is found that the following people are easy to get stomach cancer, if they belong to these categories, they need to be alerted. Heredity, if the immediate family members have the history of stomach cancer or esophageal cancer, the incidence rate of stomach cancer in their family members is 2~3 times higher than that of normal people. People with certain special occupations, such as those who have been exposed to sulfuric acid dust, lead, asbestos, herbicides and workers in metal industry for a long period of time, have a significantly higher risk of stomach cancer. Third, people with irregular life, especially those who have irregular diet, hungry and full, like to eat cold and spicy food, barbecue, drinking alcohol and staying up late. There are also late dinner, work pressure, low immunity, like to eat stimulating food. Fourth, the elderly with chronic diseases, and the need for long-term medication. People with gastric diseases, such as chronic atrophic gastritis, chronic gastric ulcer, chronic atrophic gastritis, gastric polyp, and those who suffer from these chronic diseases, the chance of getting stomach cancer is higher than normal people. People who don’t pay attention to stomach health and take medicines indiscriminately, the stomach is obviously uncomfortable, and they take painkillers to relieve themselves without consulting doctors, and they don’t treat minor illnesses and other factors. Although stomach cancer is scary, if it can be detected early and treated timely and properly, there is a chance of survival for five years. In the meantime, it is necessary to do regular medical checkups, so that once the disease is found, it can be treated as early as possible to avoid the spread of small diseases into big diseases.