Most anal fissures are caused by a dry, hard stool that cuts the skin of the anal canal, causing a tear that is usually accompanied by a cutting or tearing pain in the anus that lasts for several minutes or even hours and is accompanied by blood in the stool. The first thing you should do with anal fissures is to soften the stool to prevent the fissures from being repeatedly irritated by too dry and hard stool, making them difficult to heal. You can apply hemorrhoid cream to the anal opening to relieve pain and promote healing of the fissure. Most early fresh fissures can be healed in about 7-10 days with such treatment. If the fissure recurs, it will form an old anal fissure, and most of the old fissures need to be treated by surgical methods. There is also a possibility that when the stool is not too dry and hard, the pressure in the anal canal is high, which can also form anal fissures, and the fissures can be cured by surgical methods to enlarge the anus.