PPH is called suprahemorrhoidal mucosal circumferential stapling, and it is a new procedure performed under the modern concept of hemorrhoids, i.e. the theory of inferior displacement of the anal cushion. The indications for PPH surgery are prolapsed hemorrhoids, i.e. stage II, III, IV internal hemorrhoids or mixed hemorrhoids with mainly internal hemorrhoids, especially those with a ring-shaped circle. In other words, the more and bigger hemorrhoids that fall out every time you have a bowel movement, the more suitable for PPH surgery. Thrombosed external hemorrhoids, superfluous external hemorrhoids and mixed external hemorrhoids are not indications. The advantages and disadvantages of PPH surgery: the advantages are no pain in the anus, less bleeding, significantly shorter surgery time and return to work (generally 3 to 7 days to go to work normally), satisfactory results and few complications; these are incomparable to traditional hemorrhoid surgery. The disadvantage is that the hemorrhoid anastomosis is disposable and expensive, in addition to the long-term efficacy of the surgery is yet to be further evaluated (since it was only used in China in July 2000, it should have good long-term results from what we have seen so far).