Stool bleeding without painful sensation, usually bleeding above the anal dentate line, common causes are internal hemorrhoids, ulcerative colitis, colorectal cancer, colon polyps, need to be given according to the accompanying symptoms to identify: 1, such as a history of hemorrhoids, rectal finger diagnosis with bleeding is considered internal hemorrhoid bleeding, is colon cancer and rectal cancer is generally accompanied by clinical symptoms such as wasting, weakness. 2, if ulcerative colitis, generally There is a long-term disease of mucus and blood stool, up to a year or more. There is no pain in stool bleeding, determine whether it is upper or lower gastrointestinal bleeding, usually lower gastrointestinal bleeding, the blood mostly shows bright red or bright blood color. In upper GI bleeding, the stool is mostly black because of the action of digestive juices or stomach acid. To confirm the diagnosis of painless blood in stool, you also need to exclude the cause of tumor disease, and if you have other adverse symptoms, you need to go to the hospital for examination. If it is an anal fissure, go to the anorectal department for examination, take medicine under the guidance of the doctor, pay attention to the diet in general, and avoid eating spicy and other stimulating foods to avoid aggravating the condition.