There are many reasons for bleeding at the end of the stool. If the color of blood in the stool is bright red and the surface of the stool is bloody, the common causes are anal fissures and hemorrhoids. The first, anal fissures are usually caused by dry stool or foreign body damage to the skin of the anal canal resulting in fissures, blood on the surface of the stool when wiped, blood is usually bright red and does not mix with stool, perform perianal visualization and if necessary, place an anoscope to clarify the diagnosis. The second, more common is hemorrhoids, especially internal hemorrhoids, is a varicose vein mass, when the abdominal pressure increases, squatting and sitting for a long time or eating alcohol or pepper, it will lead to hemorrhoid vein congestion, stasis and swelling, thus producing blood in the stool, blood is usually bright red, anoscopy can clearly diagnose. Thirdly, if there is blood at the end of the stool, there may be intestinal malignant tumors, in which case rectal examination should be performed, and if necessary, proctoscopy to clarify the diagnosis.