Fecalitis are one of the key factors of inflammation of the diverticular mucosa and the complications in diverticular disease of the colon. AIM. To study the results of endoscopic treatment with removal of fecalitis in diverticular disease complicated by chronic diverticulitis. Materials and methods. Between 2015 and 2019, the study included 87 patients with chronic recurrent diverticulitis. All patients received the same conservative treatment, and the main group (42 patients) underwent endoscopic rehabilitation of diverticulae. Evaluation of results of endoscopic scale (Mayo), histological scale (Reilly) and laboratory tests (fecal calprotectin) activity of the severity of inflammation of the mucous membrane of the colon showed significantly relief of inflammatory activity in the mucosa of diverticula, which contributed to a more rapid recovery of patients and reducing the frequency of relapses.