Prolapse is a relatively common clinical condition that sometimes leads to prolapse of the entire rectum or part of the rectum mucosa and prolapse from the anal canal due to relaxation and weak contraction of the anal sphincter. If the prolapse is more serious, it sometimes leads to local infection of the prolapsed mucosa and the formation of blood clots, resulting in severe pain around the anus and a feeling of swelling around the anus. If the anorectal mucosa is prolapsed for a long time, the local venous reflux is blocked and the mucosa becomes congested and edematous, resulting in protruding embedded parts. If the prolapse is prolonged, it will lead to the formation of thrombus by stagnation of hemorrhoid veins, and it can also lead to necrosis of the mucosal surface. The prolapsed rectal mucosa becomes strangulated due to the contraction of the anal sphincter, leading to necrosis. If the infection is not controlled in time, it can lead to infectious shock, which can endanger the patient’s life.