The main etiology of anterior rectal fissure is the weakness of the anterior rectal wall and excessive fecal compression of the anterior wall during defecation. Anorectal fissures may be associated with abnormalities in physiology, certain intestinal disorders, constipation, diarrhea, and so on. This condition of anterior rectal protrusion may be caused by congenital dysplasia or may be acquired. These include congenital defects of the rectovaginal septum; defects of the rectovaginal septum caused by labor or birth injuries, which cannot be repaired in time; chronic constipation or other bad bowel habits, resulting in long-term chronic compression of the anterior wall of the rectum. The occurrence of anal fissure may be related to the abnormality of its own physiological structure; intestinal inflammatory diseases such as Crohn’s disease, ulcerative colitis invasion, anal tumors, trauma, etc.; constipation, long-term constipation, fecal dryness caused by the defecation of mechanical trauma is the formation of most of the anal fissure of the direct cause; diarrhea, the number of times of defecation, so that the anal canal is subjected to the number of mechanical trauma; fecal stimulation of the anal canal caused by edema, so that the anal canal tissue The anal fissure formation is directly caused by diarrhea, frequent defecation, which makes the anal canal subjected to mechanical trauma more often; fecal stimulation of the anal canal causes edema, making the anal canal tissue fragile, etc. Once rectal protrusion and anal fissure are diagnosed, they should be treated under the guidance of a professional doctor, who will choose a reasonable treatment plan.