Anal fissures are a common anorectal disorder, primarily characterized by the formation of small ulcers due to skin lacerations below the dentate line. The main symptoms are bleeding and pain during defecation. Generally, the amount of bleeding is small, noticeable on toilet paper or with a trace of blood on stools. The primary principle of treatment is to address the spasms of the internal sphincter to facilitate the healing of the wound. Common treatment methods include anal dilation and surgical excision, with the overall objective being to alleviate sphincter spasms and promote wound healing. Only when the issue of the anal fissure is resolved will the bleeding gradually alleviate.