Bowel cancer does not always have a genetic mutation. Bowel cancer is a malignant tumor of the digestive system, commonly colon cancer and rectal cancer. For the time being, the exact cause of bowel cancer is not completely clear, and it is generally believed that the emergence of the disease is the result of a combination of factors such as diet, heredity, environment, age and so on. Although it is said that there is a close link between gene mutation and the development of bowel cancer, it does not necessarily mean that bowel cancer patients will have gene mutation. Since the development of bowel cancer can cause certain damage to one’s health and even jeopardize one’s life, therefore, individuals should have certain knowledge and understanding of bowel cancer, and actively keep away from the known risk factors related to the development of the disease. If abnormal digestive symptoms occur in daily life, one should pay attention to timely medical treatment, improve examination, clarify the cause and diagnosis, and standardize treatment under the guidance of physicians, so as to avoid delaying the condition.