The rectum is located at the end of the large intestine and is connected to the anal canal. Rectal cancer is one of the most common tumors of the digestive system. Because its early symptoms are insidious and non-specific, it is easy to lead to missed diagnosis and misdiagnosis. Some patients often consult the doctor only when the symptoms are very serious in the late stage due to the taboo to consult the doctor, which delays the diagnosis and treatment. With the continuous improvement of comprehensive treatment methods for rectal cancer, the prognosis of rectal cancer treatment is more satisfactory. The key factor affecting the treatment effect of rectal cancer is whether it can be detected early and treated timely and scientifically. Although the early symptoms of rectal cancer are relatively hidden and not very specific, patients can still achieve early detection if they pay attention to some symptoms in the anorectal area: 1. Most patients show changes in bowel habits, such as constipation, or alternating constipation and diarrhea. Especially, as the disease progresses, the surface of cancer ulcerates and secondary infection, the number of stools will increase, from a few times a day to a dozen times a day; the stools may contain pus and blood or mucus, and red and white blood cells can be seen if stool tests are performed. In the early stage, patients mostly go to internal medicine department, and these symptoms are similar to those of dysentery, and after treatment with anti-dysentery drugs, most of the symptoms cannot improve; even if they are temporarily relieved, the old disease will recur soon. Some patients have bright red or dark red blood in the stool because of local rupture of cancer, which is very similar to “hemorrhoids”, and often use hemorrhoid cream to temporarily relieve the symptoms, and then use it again soon. Based on the above factors, it is not uncommon for rectal cancer to be mistaken for dysentery or hemorrhoids and delay treatment. Therefore, any normal people, especially the middle-aged and elderly people over 40 years old, who have sudden changes in stool habits, or even mucus and blood stools and foul-smelling stools, should go to the regular hospital for anorectal consultation in time. 2, the following symptoms should be given high priority. Such as persistent abdominal discomfort, vague pain and bloating, anal swelling; anemia or weight loss of unknown cause within a short period of time; sudden touching of abdominal mass; etc. The above symptoms sometimes suggest that the tumor is progressing fast, so it should be highly valued and go to hospital for examination and treatment in time. 3.Treat related diseases in time. Such as benign rectal lesions: polyps, adenomas, schistosome granulomas, etc., generally known as pre-cancerous lesions, need timely endoscopic treatment or surgical treatment, which can prevent cancerous changes. Chronic inflammatory bowel disease, which also requires timely standardized treatment, can reduce the occurrence of colorectal tumors. Symptoms should never be avoided. Nowadays, with the increase in the issuance of scientific works, many patients like to check and see after symptoms appear, there is no excuse. However, we also found that many patients either avoid the disease and think that they are not likely to have rectal cancer, which ultimately delays the early diagnosis and treatment; or they like to take the right seat, always think that there is no cure for cancer, do not know the latest progress of rectal cancer treatment, and only know to sigh all day long, adding to the worries. The most scientific treatment of anorectal symptoms is to seek timely medical treatment and early diagnosis. It is not difficult to diagnose rectal cancer at an early stage. The “rectal finger examination” is called the “one finger” of anorectal specialists, because about 70% of rectal cancer can be detected by “rectal finger examination”, which is easy to perform and painless. It is easy and painless. After discomfort and symptoms appear, as long as the patient goes to the anorectal specialist in time, the specialist can clearly diagnose most rectal cancers by rectal finger examination. A small number of patients can also be diagnosed with the aid of proctoscopy or colonoscopy. Therefore, the key is to seek early diagnosis.