There are many excellent discussions on the surgical treatment of rectal prolapse, however, there are few discussions on constipation in patients with rectal prolapse. It is worth reminding that almost all patients with rectal prolapse are accompanied by some intestinal dysfunction, but it is difficult to distinguish whether intestinal dysfunction causes rectal prolapse or rectal prolapse causes intestinal dysfunction. A. Constipation in rectal prolapse 1. Etiology Many authoritative works consider rectal prolapse to be essentially an intestinal entrapment in which the rectum prolapses out of the pelvic floor and sphincter. Television proctography studies clearly show that the apex of rectal prolapse passes down through the mouth of the rectum and then meanders through the pubococcygeal muscle of the rectum until the inner part of the anal canal, and finally manifests as rectal prolapse at the perineum. 2, intussusception It is not certain whether intussusception will develop into total rectal prolapse. However, long-term studies of intussusception have shown that some patients do eventually develop full rectal prolapse. Intussusception is usually associated with prolonged straining to defecate due to a feeling of incomplete rectal evacuation. This is because at a certain point of forceful defecation, full rectal prolapse may develop. There is no doubt that intussusception is usually associated with an obstruction of the passage of stool that is based entirely on mechanics. Thus, intussusception fills the lumen of the rectum and prevents normal defecation. It is likely that some patients who initially suffer from colonic weakness have weakened rectal evacuation and further developed incomplete intussusception, which in turn exacerbates constipation. Therefore, it is likely that a small percentage of patients with intussusception started with colonic transmission dysfunction and abnormal rectal emptying, which gradually led to intussusception and then had a progressive development of a total rectal prolapse. Schultz and colleagues looked at 46 patients with total rectal prolapse and 29 patients with one intussusception and compared their results with rectal fixation. A higher percentage of patients in the intussusception group than in the prolapse group were found to develop increasingly severe constipation. A thorough history of patients with total rectal prolapse shows that 30 to 45% of women with total rectal prolapse have constipation. Often there is also a history of incomplete bowel movements. However, more commonly, patients with total rectal prolapse may be asked for a history of fecal control disorders. Approximately 70% of women with total rectal prolapse have poor bowel control, primarily the inability to control bowel movements and defecation very accurately, especially when straining to pass stool.