Colon cancer adenocarcinoma in differentiated stage III, generally early detection, early diagnosis, early treatment of the 5-year survival rate for the general estimate of 60% -70%. Specifically related to the timing of treatment, treatment program, the actual situation of patients, etc., can not be generalized. The treatment of colon cancer focuses on prolonging patients’ life and improving their quality of life. After timely and effective treatment, patients with moderately differentiated stage III colon cancer can get some relief of symptoms, and the 5-year survival rate is roughly estimated to be 60%-70%, which is not generalizable. It is suggested that patients should follow the doctor’s instruction to take corresponding treatment in time, and chemotherapy can be considered, which can not only kill cancer cells, but also inhibit the differentiation of cancer cells, and it has certain therapeutic effect on metastatic foci of colon cancer and primary foci of colon cancer.