手术特点是将内括约肌及直肠全部切除。手术切除范围广泛，远端切除可达３ｃｍ以上，且能获得较满意的排便功能。制作半环瓣，加强肛直角，可起到粪似直肠对类便的托储作用。术中注意保护植物神经丛，提高了术后的生活质量。手术简单、安全、效果好．是治疗低位直肠癌保留肛门功能的创新性手术。 Surgery is characterized by the removal of internal sphincter and rectum. The scope of surgical resection is wide, distal resection can reach more than 3cm, and can obtain more satisfactory defecation function. Making half-rings and strengthening the angle of the anus can play a role in the storage of the feces. During the operation, attention was paid to the protection of the vegetative plexus, which improved the postoperative quality of life. The operation is simple, safe and effective. It is an innovative surgery to treat low rectal cancer to retain the anus.