A. Painless surgery in anorectology: Anorectology, especially anal surgery, should rank first in terms of painfulness among the people and doctors. Therefore, on the basis of trying to completely cure lesions and reduce complications through surgery, eliminating pain becomes the first task of anorectal surgeons. Painless surgery means that through various methods of sedation, analgesia, anesthesia, education, diversion and intervention, the patient does not feel painful and it basically does not affect physiological life activities such as eating, sleeping, urinating and defecating, and it can promote the repair of surgical wounds. Psychological intervention analgesia: Based on the original anesthesia and general analgesic drugs to control the pain and discomfort caused by surgical trauma, the principle of psychosomatic reaction to trauma is used to reduce the anxiety, depression, panic and irritability caused by the incision by means of diversion, intervention and drug control, and to control the aggravation of somatic pain caused by the persistence of bad mood. Or the incision heals normally, but the painful sensation persists and does not subside, requiring psychological transformation to relieve it. And throughout the entire perioperative period before, during and after surgery to truly achieve pain-free recovery.