Blood in the stool is a common symptom of anorectal disease, blood in the stool can reveal a variety of anorectal diseases, the most common are the following: 1, internal hemorrhoids bleeding. Mostly seen in the first or second stage of internal hemorrhoids, generally no pain, mainly blood with hand paper, dripping blood, sometimes spraying blood, stop bleeding after relieving the stool. The chances of occurrence are high after eating spicy food and drinking alcohol. 2.Anal fissure bleeding. Most often seen in young adults, with symptoms of dry stool and constipation, accompanied by pinprick-like or tearing pain. Usually the pain disappears after defecation, but some can last for several hours. 3. Rectal tumor. Rectal cancer and rectal polyps also have painless blood in stool as early manifestation, and late stage rectal cancer can be seen as pus and blood stool and mucus stool. Therefore, once blood in stool or anal discomfort occurs, you should go to a regular hospital as soon as possible. 4.Proctitis. Blood in stool is mostly dark red or mucus-like stool, and diarrhea can occur several times a day or more than ten times a day. In addition, anal papillomegaly and perianal pruritus can also appear blood in the stool, timely access to regular hospitals standardized examination is the key.