Intestinal disease is a common clinical condition and most people have experienced a variety of intestinal conditions. However, they often take it for granted and buy themselves some medicine and deal with it. In fact, this indifferent approach to one’s own body can sometimes lead to disastrous consequences. In recent years, the incidence of intestinal tumor is increasing year by year, especially the incidence of colorectal tumor is close to the level of foreign developed countries with the improvement of living standard and change of diet, but due to the indifference of national health consciousness, many patients who could survive for a long time or even be cured are not treated in a short time. The early clinical manifestation of colorectal tumor is not specific, so it is easily confused with various benign anorectal diseases (including enteritis, intestinal polyps, intestinal dysfunction, hemorrhoids, etc.) and is easily ignored by patients. The clinical manifestations of colorectal tumor are mostly seen in change of stool habit, blood in stool, mucus stool, diarrhea, constipation, urgency, chronic abdominal pain, etc., which are sometimes easy to be misdiagnosed. And chronic enteritis and intestinal polyps may also appear malignant. Therefore, patients with the above-mentioned symptoms should pay attention and go to a specialist in a regular hospital in time. After physical examination and necessary special examinations (including anorectoscopy, colonoscopy, barium enema, ultrasound endoscopy, CT, etc.), patients with malignant diseases are treated accordingly according to benign diseases. If malignant tumor is suspected, the nature of the tumor should be clarified as soon as possible, and comprehensive treatment including radical surgery, chemotherapy, radiotherapy, biological therapy and Chinese medicine therapy should be taken in time. At present, colorectal tumors are still treated with radical resection as the main comprehensive treatment. The efficacy has been significantly improved, both the five-year survival rate and the postoperative quality of life have been significantly improved. Its treatment effect and prognosis are directly related to the clinical stage of the tumor. Therefore, the key to the treatment of colorectal tumors is early detection and early treatment.