The so-called prolapse refers to the prolapse of the rectal mucosa, which is a benign lesion and is not life-threatening. After the prolapse of the anus in the elderly, it can be relieved or even cured after active treatment, and the patients can reach the natural life expectancy. The elderly due to the anus, pelvic floor muscles become weak, and easy to suffer from prostate hyperplasia, chronic constipation, chronic bronchitis and other diseases that increase abdominal pressure, resulting in the mucosa of the rectum downward displacement, and prolapse outside the anus to form the prolapse of the anus. Prolapse is mainly manifested as a bright red cylindrical prolapse from the anus repeatedly, and the patient may have a sensation of swelling in the anus, and some patients may have congestion, edema and ulceration of the prolapsed mucosa of the rectum, and in severe cases, the prolapsed mucosa of the rectum cannot be incorporated into the anus. Can occur constipation, anal incontinence, ulceration, rectal mucosa bleeding and other complications, can be recovered after active treatment. In the elderly after the prolapse of the anus, we should seek medical treatment as soon as possible, improve the examination, clear the condition, the professional physician for the condition of the corresponding treatment measures to avoid delay, follow the doctor’s instructions.