Survival time after chemotherapy for bowel cancer is largely judged according to the tumor stage as follows: 1. For some patients in stage II or IV, the survival time is likely to be longer, for example, around five years. 2、For some patients with advanced stage, the survival time is shorter, possibly around half a year or one year. The treatment for bowel cancer patients includes surgery, and chemotherapy is needed after the surgery, so some patients have better treatment effect, and the survival time can be prolonged, but some patients do not have good treatment effect, and there may even be tumor recurrence or tumor metastasis in the process of chemotherapy or in the process of rechecking, which may shorten the overall survival time of patients. It is recommended that patients should go to the hospital for regular review, including the review of tumor indicators, the review of abdominal and pelvic CT enhancement, and the review of colonoscopy.