Purpose. The main approach to acute perforated diverticulitis with purulentor fecal peritonitis involves urgent open colectomy with colostomy.The aim of this study is to assess the feasibility of diverting stoma withoutresecting the diseased colon during acute perforated diverticulitis (Hincheygrade III or IV).Methods. Patients who received surgery for acute perforated diverticulitis(Hinchey grade III and IV) from 2014 to 2017 in our hospital were analyzed.This is a retrospective chart review study. We divided the patientsinto two groups according to surgical interventions: diverting stoma withoutresection of diseased colon or Hartmann’s procedure. We review thepatient demographics and short-term surgical outcomes.Results. The patient characteristics were similar in the two groups. Theduration of surgery was shorter in diverting stoma group (mean 84.4 min)than that in the Hartmann’s procedure group (mean 150.4 min) (p = 0.001).Patients receiving diverting stoma had less frequent postoperative ICUrequirement and lower postoperative complication rate (15% in divertingstoma group; 50% in Hartmann’s group). There were no significant intergroupdifferences in in-hospital mortality rate (two in diverting stomagroup; zero in Hartmann’s group), mean postoperative hospital stay andstoma reversal rate (53.3% in diverting stoma group; 50% in Hartmann’sgroup).Conclusions. Diverting stoma without resecting the diseased colon is feasibleand may benefit certain patients with acute perforated diverticulitis(Hinchey grade III or I