PPH surgery, or anastomotic hemorrhoid circumferential hemorrhoidectomy, is indicated for all types of hemorrhoids, especially for patients with severe internal hemorrhoids and partial rectal mucosal prolapse. The principle is to preserve the anal cushion and perform instantaneous anastomosis while circumferentially removing and anastomosing part of the internal hemorrhoid and the mucosa and submucosa tissues on the hemorrhoid. The blood supply of hemorrhoids is blocked and the slipped tissue is suspended and fixed, restoring the pathological state of the anorectum to its normal anatomical state. Its characteristics: (1) significantly reduce postoperative pain; (2) significantly reduce postoperative bleeding; (3) significantly shorten the hospital stay; (4) significantly accelerate the recovery cycle; (5) avoid postoperative anal stenosis and defecation difficulties.