Walking can aggravate anal fissures. Anal fissure bleeding is mainly caused by direct stimulation of the anal canal by feces, causing local tearing of small blood vessels. The bleeding is bright red in color and the amount of bleeding is relatively small, and most of it will stop after a bowel movement. If the bleeding is only occasional or intermittent, the amount of bleeding will not be very large. As long as the unfavorable bowel triggers are removed, especially dry stools, thicker bowel movements or excessive force, etc., and there is no stimulation from these factors, the bleeding does not necessarily require medication. If anal fissure bleeding occurs repeatedly, the fissure may form a chronic ulcer and its tissue repair cannot reach a self-healing state. At this time it is necessary to promptly seek professional examination by a specialist to determine whether the bleeding is caused by anal fissure and thus further clarify. Anal fissure bleeding is suitable for treatment with medication alone, but can also be treated with anal dilation, even if surgical treatment is necessary. Therefore, bleeding anal fissures should be evaluated professionally to guide their treatment and prognosis.