目前,我国大肠癌的发病率为(3.1～10.7)/10万,其中直肠癌约占56%～70%,而低位直肠癌的比例可达70%～80%[1]。我国直肠癌的特点就是低位,肿瘤位于腹膜返折以下,距肛缘7cm以下。近年来,人们对低位直肠癌手术治疗的要求已从以往单纯追求根治转向治愈疾病兼顾保全肛门功能,尤其是吻 Currently, the incidence of colorectal cancer in China (3.1 ~ 10.7) / 100000, of which rectal cancer accounts for about 56% to 70%, while the proportion of low rectal cancer up to 70% to 80% [1]. The characteristics of rectal cancer in China is low, the tumor is located in the peritoneal folds below the anal margin of 7cm below. In recent years, people’s requirements for surgical treatment of low rectal cancer have shifted from the simple pursuit of cure in the past to both cure diseases and preserve anal function, especially the kiss