Bowel cancer is a possibility in four year olds, but the incidence is low. Bowel cancer can occur at any age, and there is a possibility that a four year old can get bowel cancer, which is mostly related to hereditary factors. It is important to note that bowel cancer is more common in middle-aged and older people over the age of 40, and is more common in men than in women. The occurrence of this disease may be related to genetic factors, dietary factors, chemical carcinogens, unhealthy lifestyle and other reasons. If a four-year-old child develops unexplained abdominal pain, blood in stool, change of stool shape, etc., parents are advised to take the child to the gastroenterology department or gastrointestinal surgery department of the hospital as soon as possible, and through perfecting the colonoscopy, abdominal CT and other related examinations, it can be clarified whether the child suffers from intestinal cancer or not.