The full name of PPH surgery is “anastomotic supra-rectal mucosal circumferential hemorrhoidectomy”, which is a new procedure in the modern treatment concept of hemorrhoids, emphasizing the essence of “hemorrhoids”, not destroying the normal structure of the anus as much as possible, and preserving its function to the maximum extent, changing the traditional It is a revolution in the treatment of hemorrhoids, as the surgery only targets the “hemorrhoids”. The technique involves controlled and effective circumferential resection of the rectal mucosa on the dentate line through a specially designed anastomosis and anastomosis of the distal and proximal mucosa, so that the prolapsed internal hemorrhoids and mucosa are suspended and pulled upward, while the small blood vessels in the submucosa are blocked and the blood supply to the hemorrhoid nucleus is reduced and shrunken, and the basic function of the anus is restored.