If the anal fissure is accompanied by bleeding, it is recommended that the patient come to the hospital for examination, first of all, to see the amount of bleeding, if the amount of bleeding is relatively small, usually after the end of defecation, the local bleeding may stop on its own. If the bleeding is heavy, the patient needs to go to the hospital immediately and be treated with gauze plugs or blood transfusion if necessary. Most of the bleeding caused by anal fissure occurs after defecation, which is mainly caused by damage to the fissure and rupture of blood vessels. If the amount of bleeding is small, patients are advised to go to the hospital for examination, and if necessary, they can use warm salt water or potassium permanganate solution to sit in the bath, and apply topical ointment. In addition, patients are advised to eat a light diet, and if necessary, surgery is needed. If the amount of bleeding is relatively large or combined with hemorrhage, it must be treated in time, and pressure is needed to stop bleeding or surgical suture to stop bleeding. If the amount of blood loss is too much, if necessary, blood transfusion is also needed, for anal fissure bleeding more patients, it is recommended to do timely surgical treatment.