There are also many reasons for bleeding stools without hemorrhoids: first, we should first ask for a medical history, a history of striking or squatting, and a history of foreign body invasion. If a foreign body invades the rectum, it can damage the rectal mucosa and cause bleeding due to rupture of blood vessels, and anoscopy can clarify the diagnosis. Second, if there is anal fissure, such as dry stool can easily damage the skin of the anal canal and lead to fissures, and blood will appear on the surface of the stool when wiping it. Third, if there are rectal polyps and rectal adenomas, long-term stool irritation will cause blood vessels on the mucosal surface to rupture, thus causing bleeding. Fourth, malignant tumors of the rectum and malignant tumors of the colon can erode the blood vessels under the mucosa of the rectum, which can cause blood vessels to rupture and bleed. Therefore, there are many causes of blood in the stool, and we should combine medical history, physical examination, rectal examination and, if necessary, anoscopy or colonoscopy to clarify the cause and location of bleeding.