There are two causes of bleeding before stool; one is due to digestive tract problems; the other is due to anorectal diseases. It is recommended to have a colonoscopy after cleaning the intestines to clarify the cause and location of the bleeding and to give different symptomatic treatments according to the condition. If it is caused by anal disease, common hemorrhoids or anal fissure, in addition to blood in the stool, may also be accompanied by obvious pain during defecation, it is recommended that you can go to the hospital anorectal department, rectal examination and anoscopy to clarify what kind of problem, and then give symptomatic treatment, it is generally recommended to consider surgery.