To study the application value of 3D laparoscopic radical surgery of right colon cancer for lymph node dissection in obese patients.

The clinical data of 112 patients with visceral obesity undergoing laparoscopic total mesenteric resection of right colon cancer from January 2017 to December 2020 were retrospectively analyzed. The patients were divided into 3D group（n=47 cases）and 2D group（n=65 cases）according to different laparoscopic systems. SPSS 24.0 software was used for data analysis. Perioperative indicators，serum indicators and other measurement data were expressed by（

Compared with 2D group，3D group had less operation time，intraoperative blood loss，postoperative exhaust time and hospital stay，and more lymph node dissection，with statistical significance（P<0.05）；There was no significant difference between the two groups in hospitalization cost and positive rate of lymph node detection（P>0.05）. The incidence of complications was 14.9% in the 3D group and 18.5% in the 2D group，with no significant difference between the two groups（P>0.05）. There was no significant difference in imaging quality，visual fatigue and manipulation coordination between the two groups（P>0.05）；in the comparison of spatial orientation and visual angle freedom，the score of 3D group was higher than 2D group，and the difference was statistically significant（P<0.05）.

The application of 3D laparoscopic technology in radical resection of right colon cancer in patients with visceral obesity can shorten the operation time，reduce intraoperative bleeding，increase the number of lymph node dissection，and facilitate the early postoperative recovery of patients.