The difference between blood in stool caused by intestinal polyp and blood in stool caused by intestinal cancer usually lies in the pattern of blood in stool, the color of blood in stool, and the amount of bleeding. 1. The pattern of blood in stool: blood in stool caused by intestinal polyps usually does not have much change from normal stool, and usually has a blood color on the surface of stool. Bowel cancer usually has pus and blood stool, loose stool and bleeding. 2. The color of blood in stool: Usually, the blood in stool caused by bowel polyps is bright red, and there is no anal pain and other phenomena. On the other hand, the color of blood in stool of intestinal cancer is mostly dark red and black, accompanied by abdominal pain and so on. 3. The amount of bleeding: intestinal polyps usually cause less blood in stool, and if there is blood in stool, it is also a small amount of blood color. Bowel cancer has common blood in stool, and the amount of bleeding is also less, but it can be with pus, and if the blood vessels are ruptured, it will bleed a lot. Patients with symptoms of blood in stool should go to regular hospitals for examination to find out the cause of the disease, and timely treatment under the guidance of doctors.