The proportion of rectal cancer is more than colon cancer in China, which may be mainly related to socio-economic factors, in addition, the proportion of middle and late stage rectal cancer is also higher, accounting for about 8-15%, among which the proportion of low rectal cancer is high (65-75%), so it should be paid enough attention. Some patients often panic because of blood in stool and come to the hospital saying that they have rectal cancer? In this regard, as a specialist doctor, I think it is necessary to give a lecture on cancer prevention to the general public: Symptoms: Symptoms of rectal cancer are usually easily detected by patients with bloody stools, but that is why they are often confused with hemorrhoids, which are usually bright red fresh blood in stools, often found on hand paper when patients wipe; in addition, patients often have a feeling of anal drop, a feeling of unclean stools, a feeling of wanting to stool but not being able to. Some patients come to the clinic because they find that they have lost weight, which often indicates that the cancer has developed faster and the tumor load is larger. To put it simply, once you have symptoms and have suspicion, you should seek professional medical help and not to take a chance and let the disease progress, as we have seen many patients with advanced disease delaying the best treatment time because of neglecting or taking a chance.