随着外科技术的发展，腹腔镜手术已经成为直肠癌的重要治疗手段。在保证肿瘤根治性、改善患者预后的前提下，如何进一步减少手术创伤、降低手术并发症发生率、提高保肛率、加快术后康复是腹腔镜直肠癌手术发展的重点。经自然腔道取标本手术（NOSES）作为一种新兴技术，具有创伤小、恢复快、美容效果好等优点。本手术展示了NOSES I式G法在低位直肠癌中的应用，并联合应用了荧光导航技术、内括约肌切除术、侧方淋巴结清扫术等技术，兼顾了根治、微创以及保肛等目标。

With the development of surgical techniques, laparoscopic surgery has become a critical treatment for rectal cancer. Besides ensuring the radical removal of tumor to improve the prognosis, it's also important to reduce the surgical trauma, decrease the incidence of complications, improve the anal preservation rate, and accelerate the postoperative recovery. As a new technique, natural orifice specimen extraction surgery (NOSES) has the advantages of less trauma, faster recovery, and better cosmetic effect. In this article, we present a case of NOSES type IG for low rectal cancer, with the application of fluorescence navigation technology, intersphincteric resection and lateral lymph node dissection, giving consideration to the goals of radical removal, minimally invasive, and anus preservation.