Abstract: To explore the prevention measure of complications after operation of colorectal cancer,a retrospective study of 70 post-operation patients with colorectal cancer  was performed.The results showed that 32 cases had the complications (41.02%),including postoperative infection in 4 cases,wound dehiscence in 4 cases,intestinal obstruction in 1 case,urine retention in 6 cases,anastomose ora fistula in 5 cases,stomal stenosis in 3 cases,stomal infection in 3 cases urethraltrauma in 1 case,para-stomal hernia in 2 cases,and post-operation death in 3 cases.It is important to prevent complications after operation of colorectal cancer.Less complication can reduce the operation mortality and improve the quality of life.

Key words: colorectal cancer, operation, complication