Anal bleeding requires a determination of the cause of the bleeding. If the bleeding is bright red bleeding, the location of the bleeding can be determined by anoscopy or proctoscopy. If the bleeding is bright red, the location of the bleeding point is near the anus, which is often the case for internal hemorrhoids, anal fissures or rectal polyps, so you can choose symptomatic treatment. You can choose internal hemorrhoid suppositories or surgical treatment, which can get a good effect of stopping the bleeding and the disease can be cured. If the bleeding is dark red, it needs to be combined with e-colonoscopy or gastroscopy, and then the location of the bleeding point should be clarified, and the bleeding is from the upper gastrointestinal tract stomach or upper segment colon. Because the location is far from the anus, the bleeding becomes black after digestion in the digestive tract, and further treatment is needed after a clear diagnosis.