The chance of metastasis of colonic endomucosal cancer cannot be determined, and it depends on the patient’s personal physical condition, treatment measures, severity of the disease and other reasons. Early stage of colonic endomucosal cancer may not have any symptom, and some people may have symptoms such as abdominal distension and indigestion, etc. It can be removed by surgery, and the chance of recurrence and metastasis is relatively small if the patient adopts a good lifestyle in the later stage of the disease. In the late stage of intramucosal cancer of colon, symptoms such as abdominal pain, blood in stool, abdominal bag fast and so on may occur, and the cancer cells have invaded into the muscle layer, even if it has been treated by surgery, the chance of recurrence and metastasis in the later stage is higher, so one can only cooperate with the doctor actively in the treatment, controlling and preventing the metastasis and recurrence of the cancer cells. It is necessary to pay attention to rest, avoid overwork, do not stay up late, pay attention to balanced nutrition, prohibit smoking and drinking, and develop good living and dietary habits. Regular checkups are needed to monitor the changes of the condition, and timely diagnosis and treatment are needed if there are uncomfortable symptoms.