The reason why the popular saying that bowel cancer is a lucky cancer may be because pre-cancerous diseases, such as colon polyps, often exist before the occurrence of bowel cancer, which can help prevent bowel cancer based on the treatment of the disease and with regular screenings. Moreover, compared with other cancer types, the symptoms that appear in the early stage are relatively easy to detect, such as having bloody stool, mucus stool, etc., which can be detected intuitively by patients, and early and timely diagnosis has a relatively good prognosis, and thus is called lucky cancer.1. Early detection: before the occurrence of bowel cancer, precancerous diseases, such as colon polyps and inflammatory bowel disease, often appear first. After the emergence of these diseases, patients often have already visited the doctor for treatment of related diseases to avoid triggering factors; 2. Early prevention: for people with intestinal history or family history of intestinal cancer, after previous systematic treatment, doctors often also tell patients to review regularly to prevent cancer; for people with family history, they will also do intestinal cancer screening in physical examination, which helps to detect lesions early; 3. Early treatment and better prognosis. Common intestinal lesions or cancerous lesions may show digestive symptoms, such as diarrhea, constipation, blood in stool, abdominal pain, nausea, vomiting and other symptoms, and patients will also seek medical examination in time. If after the diagnosis of bowel cancer is clear, the systematic treatment can be started relatively early. At this time, most of the cancers have not yet invaded tissues too deeply or metastasized to distant places less frequently. Therefore, after timely treatment, most patients have a good prognosis, for example, the 5-year survival rate of early stage of bowel cancer can be as high as 90%.