The survival time of colon cancer and rectal cancer patients can not be compared simply because patients have different physique, different types and stages of the disease, and different treatment measures taken by patients, so there is no specific survival time for colon cancer and rectal cancer patients, and it is impossible to compare. 1. Physical condition of patients, for colon cancer and rectal cancer patients with good physical condition and no underlying diseases, the survival time is relatively longer than that of patients with poor physical condition. 2. Disease typing and staging, there are many types of colon cancer and rectal cancer patients, among which the survival time of patients with higher malignant degree is relatively shorter, while that of patients with lower malignant degree is longer, and the survival time of patients with early stage is longer than that of patients with late stage. 3. Treatment measures, according to the specific stage and type, those who take early and appropriate treatment measures will have a relatively long survival time, while those who do not take treatment or improper treatment will have a relatively short survival time. For specific cases, it is recommended that patients go to the hospital to improve the auxiliary examination, clarify the condition, and actively treat the disease.