In clinical practice, it is found that gastric cancer may appear one year later after the gastroscopy examination a year ago, which is a common clinical situation. It is mainly due to the fact that early gastric cancer, especially micro gastric cancer, may not be detected during gastroscopy due to technical level or the hidden location of gastric cancer. Therefore, do not be overly nervous or worried about this situation, as long as surgery can be taken in time and other treatment options can be selected according to the pathological type after surgery, it may effectively improve the survival and cure rate of gastric cancer patients.