In men, dark red blood or black stools in the bowel are considered to be colon or upper gastrointestinal diseases, such as acute gastric mucosal injury and peptic ulcer, while fresh blood in the stool is considered to be rectal diseases and hemorrhoids and anal fissures, etc. Hemorrhoids and anal fissures are more common causes of fresh blood in the stool. The hemorrhoids and anal fissures with less bleeding and milder symptoms do not need special treatment, but can be treated conservatively by improving bowel habits early, keeping the bowels open, preventing constipation and diarrhea, taking local sitz baths with hot water or fumigating with a hot water solution prepared with potassium permanganate to promote local blood circulation, which has the effect of disinfection and sterilization, and also using topical hemorrhoid ointment that has a hemostatic and cooling effect to reduce local reactions. If the bleeding volume is large and the topical medication is not obvious, you should promptly go to the hospital gastroenterology department to clarify the condition and further symptomatic treatment, if necessary, check the colonoscopy or gastroscopy, the appearance of dark red blood or black stool should be perfected as soon as possible gastroscopy and colonoscopy.