Anal fissure is a very common anal disease, basically caused by dry stools and difficulty in defecation, resulting in symptoms associated with anal fissure after mechanical trauma to the anal canal. If an anal fissure is well and recurs again, it should be treated conservatively in a timely manner, with timely symptomatic treatment to relieve the symptoms and repair the fissure wound to be able to heal on its own and avoid surgery as much as possible. If an anal fissure is committed, you must pay attention to avoiding the mouth, avoiding stimulating diet, cold and spicy things, avoiding alcohol, avoiding anal cold, avoiding forceful defecation, and avoiding dry stools. You should promptly apply topical compound keratanate cream topically to the anal fissure wound, and you can also use potassium permanganate to insist on a local sitz bath for the anus, both of which can play a role in repairing the anal fissure wound. If the anal fissure recurs and conservative treatment is really ineffective, surgical treatment is needed.