Pain is the most common postoperative complication of anorectal disease, and clinical observation reveals that most anorectal patients, postoperatively, experience pain of varying degrees, which in mild cases brings pain to the patient and in severe cases affects the prognosis and even induces life-threatening serious diseases. Furthermore, postoperative pain in anorectal disease is a major problem for clinicians and directly affects the quality of surgery. Therefore, how to prevent and reduce the occurrence of pain, alleviate the patient’s pain, promote wound healing, and restore its physiological function as soon as possible is a topic worth exploring in clinical practice. Since January 1, 2002, our department started to use CD-9 Haihua Therapy Instrument for the treatment of post-operative pain in anorectal disease, and made clinical observation on the pain of 314 patients after anorectal disease and took corresponding measures, and achieved satisfactory results. The clinical data are as follows: 1. 314 cases of patients with anorectal disease, 182 men and 132 women, were selected from January 1, 2002 to December 31, 2002 for outpatient and inpatient surgery in our department. The average age was 38 years old, ranging from 16 to 60 years old. Among them, there were 102 cases of mixed hemorrhoids, 96 cases of anal fistula, 54 cases of anal fissure, 21 cases of internal hemorrhoids, 30 cases of external hemorrhoids, and 32 cases of perianal abscess. The duration of the disease was more than 20 years in the longest cases and a few days in the shortest cases. The surgical methods were mixed hemorrhoids, external hemorrhoid stripping, internal hemorrhoid ligation, external hemorrhoidectomy, anal fissure excision, internal sphincter lateral excision, anal fistula excision, low anal fistula excision, and high hanging. All patients were randomly divided into treatment group and control group of 157 cases each. The control group used conventional pain relief methods. 2. Treatment method Postoperative patients, take a comfortable position, place two contacts wrapped with three layers of moistened gauze around the anus, or avoid the trauma, do not make contact together, adjust the output to the extent tolerated by the patient, and generally treat for 1~2 minutes, the pain disappears immediately. If the pain reappears, the treatment can be repeated, or the family or the patient can be taught to operate it himself. The pain before and after the stool or before and after the change of medicine is unavoidable by conventional treatment, and this treatment method immediately stops the pain and makes the pain disappear immediately. 3. Discussion Postoperative pain in anal diseases seriously affects the quality of life of patients, and postoperative pain in patients with anal diseases has its own peculiarities. Because of the many nerve sources in the anal area, there are rich nerve endings, blood vessels and lymph in the perianal skin. The pain can be aggravated by the strain on the perianal tissues, injury, extrusion, resulting in local muscle spasm, obstruction of meridians, occlusion of qi and blood, and the influence of postoperative activities, defecation, drug change, etc. The pain can make the patient feel fearful and affect the patient’s sleep, as well as cause difficulty in urination or urinary retention, and even induce life-threatening serious diseases, making many patients give up treatment for fear of pain. Many patients give up treatment because of the fear of pain. There was no significant difference in clinical data between the two groups, and the findings were comparable.