Purpose: Discussing obstructed defecation syndrome is intriguing due to diversity of disorders affecting anorectal region. The gold standard examination for assessment of these different disorders is the conventional defecography (CDF), however radiation exposure and lack of evaluation of pelvic structures concerned with defecation process were major disadvantages .Our goal was to evaluate the recently developed Echodefecography (EDF) as a new technique using endoluminal ultrasonography to avoid such disadvantages. Methods: It was a prospective study including 15 patients complaining of obstructed defecation symptoms. The mean age of included patients was 36.7 years ± 14.3 years. All candidates underwent echodefecography and conventional defecography. Geometric measurements of anorectal angle, depth of rectoceles and degree of perineal descent were obtained from both modalities for comparison. Anorectal intussusception was looked for its presence or absence. Results: EDF identified 13 cases of rectoceles while CDF identified 14 cases (good statistical agreement was observed between both modalities [ value 0.634]). Anorectal descent was diagnosed in 7 cases by EDF and CDF which detected 4 more cases (moderate statistical agreement [ value 0.483]). Anismus was detected in 3 cases by EDF but in only 2 cases by CDF (fair statistical agreement [ value 0.286]). EDF detected 12 cases of intussusception, however CDF detected only 1 case (poor statistical agreement [ value 0.035]). Conclusion: Echodefecography has good accuracy of detection of different anorectal disorders associated with obstructed defecation syndrome when compared with conventional defecography. Keywords: Defecography, Ultrasonography, Pelvic floor, Rectocele, Anismus, Perineal descent.