Background The aim of this study was to assess the efficacy of traction device-assisted endoscopic submucosal dissection (ESD) of the rectum and the distal segment of sigmoid colon using grasping forceps. Methods A total of 43 patients scheduled for colonic ESD at our institution were enrolled between January 2013 and June 2017. The patients were randomly allocated to receive conventional ESD (group A) or traction device-assisted ESD (group B). The procedure time, complication rate, and en-block resection rate in the two groups were compared. Results A total of 41 patients completed the study. The procedure time, complication rate and en-block resection rate were, respectively, 104.1 +/- 34.7 min, 15%, 90% in the routine group (group A) and 84.7 +/- 23.5 min, 9.5%, 90.5% in traction device-assisted ESD (group B). The procedure time in group B was significantly less than that in group A (F = 4.442, p < 0.05). Conclusions Traction device-assisted ESD using grasping forceps is safe and effective in distal colon ESD.