Hirschsprung's disease (HD) in adults constitutes a rare cause of chronic constipation. Surgical intervention constitutes the only one radical method of treatment of HD. The investigation objective was to improve the functional results of treatment of HD in adults, using a new surgical approach elaboration. The method of surgical treatment of a HD in adults was proposed, which envisages a conduction of distal subtotal colecto- my and total mesorectumectomy with formation of a coecoreservoiroanal anastomosis. Application of the method proposed have had promoted an essential reduction of unfair functional results in a remote postoperative period.