本文报道了30例直肠中下段肿瘤经腹骶手术切除,保留肛门括约肌的手术方法及临床观察结果。本手术在直视下行超低位直肠肿瘤切除,能完好地保留肛门括约肌。术后排便功能恢复良好,从而改善和提高了直肠中下段肿瘤病人术后的生存质量。 This article reports 30 cases of rectal mid-lower tumor resection by abdominal hernia, preservation of the anal sphincter surgical methods and clinical observation results. The operation was performed under direct vision with ultralow rectal tumor resection, and the anal sphincter was preserved intact. The defecation function recovered well after surgery, which improved and improved the quality of life of patients with rectal cancer.