The PPH procedure is an anastomotic circumferential resection of part of the rectal mucosa and submucosal tissues through the anus, based on the theoretical basis of the understanding of the pathogenesis of hemorrhoids, namely the theory of submigration and slippage of the anal cushion. After choosing the appropriate anesthesia method, after the anesthesia takes effect, the anus is opened manually, and the rectal mucosa is circumferentially sutured for a week at about 4cm above the dentate line, and then the PPH anastomosis is placed in the anus, and after ligating the sutures, the anastomosis is struck, and the submigrated or prolapsed rectal mucosa is removed, and the operation usually takes less than half an hour. The surgery not only removes the prolapsed rectal mucosa but also blocks the terminal anastomotic branch of the end of the rectum, eliminating the root cause of hemorrhoids, which is suitable for the third and fourth stage internal hemorrhoids and the ring-shaped mixed hemorrhoids mainly internal hemorrhoids. In recent years, the relevant literature has reported complications such as incomplete retraction of external hemorrhoids, submucosal hematoma, urinary retention, postoperative anastomotic bleeding, and anastomotic fistula after PPH surgery, but it is still a relatively mature clinical technique, and perioperative management and antibiotic application are essential in clinical practice.