PPH surgery, also known as anastomotic supramucosal hemorrhoidectomy, is generally less painful than traditional surgery, but the pain varies from person to person. Anastomotic hemorrhoidectomy refers to the use of PPH anal anastomosis, the rectal mucosa above the dentate line for circular excision, thereby blocking the blood flow of the hemorrhoidal veins, as well as suspension of hemorrhoids, generally speaking, above the dentate line by the vegetative nerve innervations, there is no pain, but a variety of intraoperative manipulation, but still cause pain and discomfort in the patient. Surgery to dilate the anus, as well as resection of part of the rectal mucosa, which in turn produces local stimulation, causing pain and discomfort; if the anastomosis is too close to the dentate line, and the patient’s pain threshold is lower and more sensitive, there will be localized pain and discomfort in the anus; for the sensitive patients, titanium nails remain in the local area, which will also cause pain symptoms. However, some patients with a high pain threshold and less sensitivity will experience less pain.