At present, the average time for rectal cancer surgery is about 2~3 hours, with slight differences between individuals. At present, there are two main ways of radical rectal cancer surgery: Caesarean section and laparoscopic minimally invasive surgery. With the mature development of technology, radical rectal cancer surgery is already a very standardized surgical procedure, and the average operation time is about 2~3 hours at present. Under normal circumstances laparoscopic surgery does not significantly increase the operation time. If the tumor is relatively early, the location is relatively high, and the difficulty of non-obesity is relatively low, the operation time is relatively less. If the tumor is late and the condition is complicated, the difficulty of surgery for obesity increases, the location of tumor is low and cannot be anus-preserving and perineal resection and fistula, or if the tumor is difficult to be operated for the second time, the operation time will be prolonged in general. In special cases, it takes 4~5 hours or more. The skillfulness of surgical operator also has some influence on the operation time, but the difference is generally not very big, because the surgical surgeon must have the corresponding qualification. Rectal cancer patients should go to hospitals with appropriate qualifications for standardized medical treatment and early detection and early treatment in order to avoid delaying their condition.