在我国低位直肠是直肠癌的好发部位。传统的手术是腹会阴联合切除加腹壁永久性结肠造口术。随着医学科学和手术技术的发展，对低位直肠癌要求在根治的基础上尽可能地保留肛门功能。在诸多的保肛术中，应用管状吻合器行直肠前切除低位或超低位吻合是最理想的手术，能提高盆腔内? Low rectal in our country is a good site for rectal cancer. Traditional surgery is abdominal perineal resection plus abdominal permanent colostomy. With advances in medical science and surgical techniques, low rectal cancer is required to retain anal function as much as possible on a radical basis. In many of the anal sphincter, the application of tubular stapling anorectal resection of low or ultra-low anastomosis is the best surgery, can improve pelvic?