目的　研究出口梗阻性便秘 (OOC)病人盆腔器官及盆底形态结构变化。方法　对 38例OOC病人及 1 2例正常自愿受试者行排粪造影结合盆腔、膀胱造影 ,女性阴道内放置浸钡标志物 (以下简称“多重造影”)。测量肛直角、会阴位置、盆底腹膜位置、膀胱位置。结果　多重造影诊断直肠内脱垂 37例 ,直肠前突 5例 ,盆底痉挛综合征 5例 ,物理检查拟诊分别为 1 2例、4例、1例 ,均1 0 0 %得到证实。多重造影检查还发现盆底及腹膜疝 9例 ,膀胱脱出 6例 ,会阴下降综合征 3例 ,子宫后倒或脱垂 1 0例。与对照组相比 ,OOC组力排相肛直角增大 ,静息相及力排相会阴异常下降 ,力排相Douglas陷凹加深 ;OOC组中有泌尿系症状者 ,静息相及力排相膀胱异常下降。结论　多重造影诊断直肠内脱垂和直肠前突的阳性率明显高于物理诊断 ;而且对临床隐匿、物理检查难以诊断的盆底及腹膜疝、膀胱及子宫、阴道脱出等提供了形象客观的诊断依据 ,提高了诊断的准确性 ,有助于选择正确合理的治疗方式 Objective To study the pelvic organ morphology and pelvic floor morphological changes in patients with obstructive outlet obstruction (OOC). Methods Thirty-eight OOC patients and 12 normal volunteers were treated with pelvic and urography with fecal incontinence and barium labeling (hereinafter referred to as “multiple contrast”) in female vagina. Measurement of anal angle, perineal position, pelvic peritoneal position, bladder position. Results Multiple contrast-enhanced diagnosis of rectal prolapse in 37 cases, rectocele in 5 cases, pelvic spastic syndrome in 5 cases, the physical examination were diagnosed as 12 cases, 4 cases, 1 case, were 100% confirmed. Multiple angiography also found pelvic floor and peritoneal hernia in 9 cases, 6 cases of bladder prolapse, 3 cases of perineal descent syndrome, uterine down or prolapse 10 cases. Compared with the control group, the OOC group increased the anorectal angle of force-phase arrangement, the abnormal phase of perineal phase decreased and the Douglas depression of force phase deepened. Among the OOC group, those with urinary symptoms, resting phase, Abnormal bladder phase down. Conclusions The positive rate of multi-contrast diagnosis of intra-rectal prolapse and rectocele is significantly higher than that of physical diagnosis, and objective diagnosis of pelvic floor and peritoneal hernia, bladder and uterus, vaginal prolapse and so on, which are difficult to diagnose by clinical examination and physical examination, Based on, to improve the accuracy of the diagnosis, help to choose the correct and reasonable treatment