If there is no defecation or anal bleeding, it suggests that there may be local damage, for the following reasons: 1. Hemorrhoids, including internal or external hemorrhoids, etc., have a local rupture, causing bleeding or dripping blood after defecation, etc. 2. Constipation, resulting in the appearance of anal fissures, which are local skin injuries and may show bleeding when there is no defecation, accompanied by local pain. 3. Local anal and rectal trauma, which may have more obvious bleeding, where obvious wounds can be seen and bleeding may be larger.4. Rare diseases, such as structural abnormalities of the digestive tract and tumors, may cause bleeding. Therefore, if there is no bowel movement and the anus bleeds, you need to go to the hospital in time for a local examination to confirm the cause and do the appropriate treatment.