Objective:To evaluate the clinical efficacy and safety of modified Duhamel procedure for Hirschsprung’s disease(HD) and Hirschsprung’s allied disorder(HAD) in adults. Methods:Clinical data of 29 adult patients with HD and HAD who underwent one-stage modified Duhamel procedure(D group,n=16) or low anterior resection(L group,n=13) between January 2001 and January 2012 were analyzed respectively. Results:All operations were one-stage procedure without death case. There was no significant difference in mean preoperative life quality score((2.2±0.7) or (15.1±1.0)),operation time((160±21) min) and incidences of postoperative complications between two groups(P >0.05). However,there were less mean intraoperative blood loss((54.4±23.7) ml,t=2.394,P=0.028),shorter mean postoperative hospital stay((12.6±4.1) d,t=2.381,P=0.025) and higher postoperative life quality score((4.4±1.4),t=2.090,P=0.046 and (17.9±1.2),t=2.224,P=0.035) in D group compared with those of L group. Of the six patients who were considered treatment failures with unsolved serious complications or reoperations,2 patients were from D group and 4 patients were from L group. Conclusions:Modified Duhamel procedure is safe and effective in the treatment of HD and HAD in adults.