Case: Song Moumou, female, 76 years old. She came to the clinic with pelvic pain for more than 10 years and was unable to walk freely for 5 years due to worsening symptoms. Follow-up history: The old man had pelvic pain for no apparent reason since ten years ago, mainly in the perineum and buttocks, which was aggravated by walking and standing upright, and disappeared or relieved by lying and sitting. In the past five years, the pain has worsened and I can no longer walk, so I can’t go out for shopping or exercise, and I can only move around at home for a short time. At the same time, the pain caused serious lack of sleep and poor mental status, and I and my family had lost confidence in the treatment. She was referred by an acquaintance to our pelvic floor disorders clinic. Gynecological examination: obvious tenderness points could be palpated at the puborectalis muscle group of the anal levator muscle and the fascia of the internal muscles of the closed foramen and the sacrospinous ligament, which could amplify the pain sensation by touching this point, commonly known in our specialty as: trigger point. The right side is the heaviest. Pelvic floor muscle strength: grade 1 for both class 1 and class 2 of the deep and superficial muscles; myopotential: 4 microvolts. Fatigue -12%. Diagnosis: 1. chronic pelvic pain 2. pelvic floor dysfunction Treatment plan: treated with pelvic floor rehabilitation techniques. Individualized program: first 5-6 sessions of pain relief with low and high frequency intervals, then pelvic floor pain assessment and further modification of the pain relief program according to the pain level; after pain relief, electrical stimulation was used to enhance the muscle strength of pelvic floor class 1 and 2 muscle groups. The pelvic floor was reassessed after completing the full course of treatment and home rehabilitation was continued using vaginal dumbbells to consolidate the efficacy of the treatment. Effect: After 4 sessions of systematic treatment, the patient felt that her pelvic pain was significantly reduced, she could walk independently and do simple household chores at home, and her sleep was significantly improved and her mental state was very good. Continue the current treatment plan and follow up closely. Basic knowledge: Definition of chronic pelvic pain: pelvic pain that is non-cyclical and persists for more than 6 months and is ineffective to non-opioid treatment. Chronic pelvic pain (CPP) is characterized by a complex etiology, sometimes no obvious cause can be found even after laparoscopy or open exploration, and the degree of pain is not always proportional to the degree of lesion. In contrast, psychological chronic pelvic pain should be considered as a somatic symptom caused by psychological factors and is often diagnosed clinically as functional chronic pelvic pain, which is called psychological (or psychiatric) chronic pelvic pain according to the modern bio-social-psychological medical model theory. History taking and physical examination should be performed carefully and comprehensively and systematically in order to do the necessary auxiliary examinations to identify organic diseases and make a diagnosis of the cause of pain. In conclusion, the etiology of chronic pelvic pain is complex and not entirely clear, and involves many related disciplines, making the correct diagnosis extremely challenging. Establishing a cordial doctor-patient relationship and close interdisciplinary cooperation is the foundation for establishing the diagnosis and, on this basis, finding new treatment methods. Currently, the best method for pelvic pain without any toxic side effects, except for organic causes, is low-frequency and high-frequency bioelectric stimulation of the pelvic floor.