Anal prolapse, first should analyze its type: 1, part of the rectal mucosa prolapse, also known as internal prolapse, its cause may be due to increased abdominal pressure, constipation, etc., resulting in the relaxation of the rectal mucosa, resulting in part of the rectal mucosa prolapse, which leads to the downward migration of the anal cushion, you can do surgery PPH or TST (selective suprahemorrhoidal mucosal circumferential stapling), which can fundamentally solve the loose mucosa and can promote 2. If the rectum is completely prolapsed out of the anus, the posterior wall of the rectum should be freed via the abdomen, a patch should be placed to combine with the posterior pelvic wall, a rectal suspension should be performed, and then an anoplasty, i.e., anal reduction, can be done.