Intramucosal gastric cancer means cancer cells only invade the mucosa or submucosa, which belongs to early gastric cancer. Generally, early gastric cancer is not easy to recur after active treatment. Most of early stomach cancer patients have no obvious discomfort symptoms, some of them may have indigestion, loss of appetite, easy to fatigue, epigastric discomfort and other symptoms, but most of them can be relieved by themselves. Therefore, early gastric cancer is not easy to be detected, but may be found and diagnosed during physical examination or population census. If diagnosed as early gastric cancer, it should be treated in time, mainly with surgery. Generally, according to the individual’s situation, under the guidance of doctors, traditional open surgery, endoscopic minimally invasive surgery or laparoscopic-assisted surgery can be chosen. Further treatment such as chemotherapy (e.g. 5-FU, mitomycin, cisplatin, etc.) can also be carried out after surgery to remove residual cancer cells as much as possible. Early detection, early diagnosis and early treatment of early gastric cancer can be cured and not easy to recur. Early stage stomach cancer can be effectively controlled through active treatment and is not easy to recur. In daily life, one should pay attention to develop good living habits, pay attention to dietary adjustment, monitor the condition in real time and have regular review.