First of all, what is PPH procedure? PPH surgery, Chinese name, suprahemorrhoidal mucosal circumferential stapling. It is performed by circumcision of about 3cm of mucosa and submucosa on the hemorrhoid, and then performing a broken-end anastomosis to reset the prolapsed anal cushion to its normal position, eliminating the prolapsed symptoms, and at the same time, cutting off the blood supply to the hemorrhoid to make the hemorrhoid shrink and eliminate the bleeding symptoms. Thus, the mixed hemorrhoids are cured. Secondly, the theoretical basis of PPH surgery. PPH surgery is a surgical procedure designed on the basis of the theory of “anal cushion subluxation theory”. The theory is that the anal cushion is a normal tissue of the human body, like the door and window cushion, which acts as a seal. When the anal cushion becomes pathologically congested and shifts downward, hemorrhoids will form. Thirdly, what kind of hemorrhoids is PPH procedure suitable for treating. Mixed hemorrhoids with prolapse and blood in stool as the main symptoms and 3rd and 4th degree internal hemorrhoids. In addition, it is also suitable for the treatment of constipation of intra-rectal mucosal prolapse type. Finally, the advantages and disadvantages of PPH surgery. PPH procedure is a new method of treating hemorrhoids. It has a high rate of relief of the main symptoms of hemorrhoids prolapse and blood in the stool, a short hospital stay, and less postoperative pain than traditional surgery. The cost is higher because of the disposable anastomosis required to complete the procedure.