Minimally invasive surgery for rectal cancer can not only achieve the effect of conventional surgery, but also, due to the magnifying effect of laparoscopy, the surgical field of vision is clearer and it is not easy to damage the surrounding tissues. Minimally invasive surgery under laparoscopy can achieve or even exceed open surgery The required range of tumor dissection and resection will not cause other injuries to the patient''s body.

　　For patients with early tumors, minimally invasive surgery should be used, that is, laparoscopic surgery. This method makes the intra-abdominal condition and nerve lines in the pelvis more visible, minimizing damage to other organs. Therefore, the safety, feasibility and minimally invasive nature of laparoscopic rectal cancer surgery have been widely recognized, and it is the best and effective method for the treatment of colorectal cancer.

　　Recommend that if it is a patient with advanced rectal cancer, it should be combined with organ resection, full pelvic cavity, and half pelvic resection while reducing the surgical trauma as much as possible, so that the late patients can obtain a larger living space.

　　Trauma according to the traditional laparotomy approach, the range of colorectal and rectal cancer surgery is large (the incision is as long as 20cm), the surgical trauma is also large, and there is a lot of bleeding (often requiring blood transfusion). The patient''s recovery after surgery is slow and complicated The incidence of the disease is high, causing great pain to the patient, the patient''s psychological trauma is also great, and the immune function is hit hard.

　　In contrast, laparoscopic colorectal surgery has less trauma, clear surgical field of vision, less pollution during surgery, less blood loss during surgery, less systemic inflammatory response, and faster recovery of post-operative physical function. The advantages of bed activity early and early return to normal activity. After surgery, there is less wound pain, less chance of infection, shorter hospital stay, postoperative intestinal adhesions, intestinal obstruction, and abdominal pain are also greatly reduced. Complications and mortality are reduced to varying degrees, patients'' quality of life is improved, and the efficacy is also guaranteed.