The causes of blood in the stool in the elderly are roughly the same as those in the young. To identify its causes, we should also look at the specific symptoms and accompanying symptoms of blood in the stool: 1. If there is blood in the stool or blood dripping after the stool or fresh blood in the stool, the more common cause is bleeding hemorrhoids, which may be accompanied by itching of the anus in addition to blood in the stool. 2. Anal fissures, often caused by the discharge of coarse and hard stool, mainly blood in the stool, accompanied by severe anal 3, malignant tumors, malignant tumors of the intestine damage blood vessels will also cause blood in the stool. This kind of blood in the stool will be accompanied by wasting and other wasting symptoms, as well as changes in bowel habits. In addition, ulcerative colitis will also appear blood in the stool, this blood in the stool is abdominal pain, pus and blood stool.