Colorectal cancer is a tumor of the gastrointestinal system, including rectal cancer and colon cancer, of which rectal cancer has the highest incidence rate, accounting for about 65% of the number of colorectal cancer patients. In addition, the trend of rectal cancer patients is getting younger and younger, and the number of male incidence is 1-2 times more than that of female incidence. 1.Survival rate after surgery in early stage: If patients have discovered the disease in early stage and undergone surgery and other treatments, they can basically be cured (but after cured, they must go to the hospital frequently for regular checkups, because colorectal cancer is easy to recur). 2.Survival rate after surgery in middle and late stage: Generally, when patients are diagnosed with colorectal cancer, most of them have already developed into middle and late stage, and the survival rate after treatment in this stage is only 5%-20%, which can be extended for 3-5 years after surgery, but it still depends on individual psychological and treatment conditions.