The life expectancy of colon cancer is related to the stage of colon cancer. The 5-year survival rate of early stage colon cancer patients can be more than 96%, the 5-year survival rate of progressive stage colon cancer patients is 70%, and the 5-year survival rate of advanced stage colon cancer patients is only about 20%. Early stage colon cancer patients with limited cancer foci and good physical condition can be cured through surgery, and the 5-year survival rate of patients can reach 96%; Patients with progressive colon cancer can have regional lymph node metastasis, and need to be assisted with radiotherapy and chemotherapy after surgical treatment, and the 5-year survival rate drops to 70%; Patients with advanced stage colon cancer already have distant metastasis, and can be treated with targeted therapy, immunotherapy and other methods, the prognosis of this stage is poorer, and the 5-year survival rate is about 20%. If patients have been diagnosed with colon cancer, it is recommended to build up confidence and actively cooperate with doctors to prolong the survival period.