Transanal minimally invasive surgery (TAMIS) was first reported and named by American surgeon Atallah et al. in 2010. It is a transanal minimally invasive surgery (no transabdominal incision), which is similar to transanal endoscopic microsurgery (TEM), in which a single laparoscopic channel is placed into the anal canal and conventional laparoscopic instruments are used to perform local resection and radical surgery of rectal tumors through the anal route. However, due to the high cost of special equipment and long learning curve, TEM has not been fully promoted and applied at home and abroad, and is now mainly carried out in large medical centers, and patients also have to bear the high cost. In other words, it is more accessible to a wide range of surgeons and less costly for patients. This procedure is commonly used for local excision of early rectal cancer, mainly for early rectal cancer 10 cm from the anus, and has the advantages of good radicality and quick recovery.