To compare the short-term and mid-term follow-up results between Da Vinci robot and laparoscopic total mesorectal excision（TME）for low rectal cancer.

A retrospective cohort study was conducted on the clinical data of 99 patients with low colorectal cancer who underwent surgical treatment（Chifeng Hospital and the First Affiliated Hospital of Xi'an Jiaotong University）from March 2016 to October 2019. They were divided into robot groups according to different surgical procedures.（Da Vinci robotic surgery）and laparoscopic group（laparoscopic total mesangectomy for rectal cancer）.Using SPSS 24.0 statistical analysis software，perioperative related indicators，international prostate symptom score（IPSS），severity of incontinence（wexner）scores are represented by（

There was no significant difference in exhaust time and hospital stay between the two groups（P>0.05）. The intraoperative blood loss and number of lymph nodes dissected in the robot group were more than those in the laparoscopic group，but the operation time was longer than that in the laparoscopic group（P<0.05）. The amount of bleeding in the robot group was more than that of the laparoscopic group，the amount of lymph node dissection was less than that of the laparoscopic group，but the operation time was longer than that of the laparoscopic group（P<0.05）；The Wexner and IPSS scores of the two groups after operation were lower than those before operation，and the robot group was lower than the laparoscopic group（P<0.05）. There were no significant differences in the incidence of postoperative complications（15.1%）and 3-year overall survival（92.5%）in the robot group compared with the laparoscopic group（15.2%，91.3%）（P>0.05）.

Both Da Vinci robot and laparoscopic TME are safe and effective in the treatment of low rectal cancer. However，compared with laparoscopic TME，Da Vinci robot surgery can improve the postoperative symptoms of feces，urine and prostate，and increase the number of lymph nodes dissected.