Hemorrhoids are a common and prevalent disease that seriously affects people’s normal lives. Hemorrhoids are simple to treat when they are not serious in the early stages, but if they are left untreated for a long time, they will become more difficult to operate when surgical treatment is needed at a later stage, and also increase the pain of the patient. In addition, hemorrhoids left untreated for a long time may lead to deterioration and infection, which can lead to other anal diseases. The anus is a special organ in the human body with complex anatomy and rich nerves, and has the function of distinguishing between gases, liquids, solids and controlling bowel movements. Common causes of postoperative pain in anal disease include anatomical factors, bowel irritation, and surgical methods. The direct stimulation during defecation or the disinfection of the wound during the change of medicine can cause severe tearing pain, leading to further contraction of the sphincter, forming a vicious circle of “injury – pain – sphincter spasm – pain”. -Pain” vicious circle. The pain can be caused by the hematoma of the skin below the dentate line due to rough operation or conservative removal of external hemorrhoids during surgery, and persistent somatic pain such as soreness and biting pain due to nerve damage. Surgical excision, pulling, clamping, etc. damage blood vessels and lymphatic vessels, causing impaired blood return of lymphatic fluid, resulting in local edema and causing pain. Poor local drainage after surgery causes obstructive pain, and postoperative scar contraction compresses nerves to form paroxysmal pain. The traditional treatment of hemorrhoids, such as internal hemorrhoidectomy, is more painful due to the greater damage to the anal tissues, so many patients with anorectal disease suffer, and some patients even call it the “world’s first pain”. The surgery is bound to have damage, and hemorrhoid surgery is no exception. Post-operative analgesia for anorectal disease has always been a pressing problem for clinicians. Modern medicine prevents and treats postoperative pain through oral medication, local injection of long-acting analgesics, and improvement of surgical methods, anesthesia, drug delivery and analgesic mode. At present, the application of our department’s scientific and technological achievements in Shaanxi Province resection suture and our new technology of one-time minimally invasive hemorrhoid ligation treatment method has good results. Excisional suture method can greatly reduce the postoperative pain of patients, make the anus beautiful, but also can quickly restore the function of the anus, compared with the traditional treatment can shorten the course of treatment by more than 50%. (1) Small (linear) or almost no open trauma, even for huge circumferential mixed hemorrhoids, we can preserve the anal canal and anal margin skin to the maximum extent to restore the complete anal shape through carefully designed minimally invasive incisions. Because the skin bridge shaping meets modern anatomical and physiological needs, the postoperative anal appearance is flat and complications such as anal stenosis and incontinence are avoided. (2) Post-operative pain, edema and bleeding are significantly reduced. (3) The postoperative scar is small and the healing time is significantly shortened. (4) The dentate area and anal cushion are preserved, which protects the anal function better and overcomes the symptoms of anal dryness, pain, urgency and incompleteness that are easily caused by excessive skin loss of the anal canal in the traditional operation, so that the anal function can be restored to normal quickly. One-time minimally invasive hemorrhoid ligation is a method of treating hemorrhoids, which is developed from the traditional ligation therapy of Chinese medicine in the motherland, namely ligation. RPH is performed by applying a special automatic hemorrhoid ligature to the base of the hemorrhoid at an appropriate position 1.5 to 75 px above the dentate line, and through the tightening and strangulation of the ligature, the blood supply to the hemorrhoid is blocked or the venous backflow is reduced, which reduces the hypertrophy of the hemorrhoid or the stagnation of the blood flow, resulting in ischemia, atrophy, and necrosis, and the hemorrhoid gradually falls off. The hemorrhoids gradually fall off and the traumatic tissue is repaired and healed. With the advancement of science and technology, the concept of “minimally invasive” has penetrated into various fields of surgery, and minimally invasive hemorrhoid surgery is the best choice for hemorrhoid patients. It is the latest surgical solution for anorectal diseases today.