Rectal cancer is a common disease, the incidence of which has been on the rise in recent years in China. In the early stage, early diagnosis is often delayed because of thinking it is hemorrhoids, so most of them are in the middle and late stage when discovered. However, there are fewer rectal cancers than colon cancers in particularly late stages. In recent years, due to the improvement of the level of comprehensive treatment, the prognosis has been significantly improved, and there are two studies worth telling patients: 1. the long-term survival rate of the group of cases treated with comprehensive treatment, which is often referred to as MDT, increased by 10%; 2. the long-term survival rate of those operated by specialists increased by 10%. Comprehensive treatment includes: preoperative radiotherapy, chemotherapy and other related treatments, the main one being radiotherapy, which many patients are resistant to, but actually they are ignorant. After radiotherapy, the local recurrence rate of rectal cancer patients is significantly reduced. For locally progressive rectal cancer, it is now advocated that all or part of the postoperative radiotherapy should be mentioned before surgery in order to improve the efficacy. However, it should be pointed out that radiotherapy only reduces the local recurrence rate, but cannot improve the long-term survival rate because the distant metastasis of tumor is not resolved. It has been clinically found that the efficacy of radiotherapy is very much related to the experience of the physician specializing in this work, so even with the guidance of NCCN guidelines, the clinical experience of the physician still cannot be S regarded. If a physician who performs rectal cancer surgery every day or every week, his or her surgical level is definitely much better than that of a physician who performs less surgery. The purpose of the overall treatment of rectal cancer is to reduce recurrence and obtain a better long-term survival rate; the second is to obtain anus preservation, the current rate of which has exceeded 90%, and for an experienced specialist, the rate of which can be higher than 95%. So finding the right surgeon is crucial to preserving the anus and obtaining a good survival period. There are many patients who ask the surgeon to operate as soon as they enter the hospital. For early cases, this is not a problem, but for mid- to late-stage cases, it may not be appropriate. In addition, there are many patients who insist on minimally invasive surgery, which is actually caused by a kind of minimally invasive misinformation. Minimally invasive is just a surgical procedure that is actually not safe in many cases and is relatively technically demanding. The favorable point, compared to open surgery, is that it brings about a little more comfort and fewer wound complications for about 3 months. But this is simply insignificant for obtaining long-term survival rates and anal preservation.