Patients with very painful bowel movements and bleeding after stool have the possibility of self-healing if they are caused by minor anal fissures or hemorrhoids, but should be treated if the condition is more serious. Anal fissure bleeding is most commonly bright red and adheres to the surface of the stool; or fresh blood adheres to toilet paper when wiping the anus. Also painful anal fissures are caused by defecation, where stimulation of the damaged mucous membrane during defecation causes contraction of the perianal sphincter, triggering pain and suffering. If the anal fissure is in the early acute stage or the first anal fissure, it has the possibility of healing itself. Anal bleeding with pain caused by hemorrhoids is common in external hemorrhoids and mixed hemorrhoids with heavy bleeding and severe pain, and is not self-healing. Patients who have pain after defecation with bleeding are advised to improve their diet and eat a light diet with more vegetables rich in dietary fiber, such as celery, beans, cabbage and other foods. If the symptoms are not relieved significantly, prompt medical consultation is recommended.