RESUMO
With the promotion of transanal total mesorectal excision (taTME) nationwide, transanal endoscopic surgery has become more and more widely used. However, at present, there is still a situation in the domestic colorectal surgery community that is not uniform, in-depth and not standardized in the understanding of the issues related to transanal endoscopic surgery. In order to clarify the key issues of transanal endoscopic surgery, including definition, indications, contraindications, surgical classification, basic principles of surgery, prevention and treatment of complications, the experts of the writing committee based on the existing evidence combined with clinical practice to verify the definition of transanal endoscopic surgery, indications, contraindications and surgical classification, by means of voting for key issues such as intraoperative sterility, no tumor principle, surgical quality control, specimen removal method, digestive tract reconstruction, how to solve intraoperative pressure instability, how to ensure the safety of anastomosis, and prevention and treatment of complications, aiming at providing guidance for transanal endoscopic surgery in China.