Pain (pain) is an unpleasant subjective sensory and emotional experience caused by various physical and chemical injurious stimuli acting on the organism and causing tissue damage. Pain medicine is a cross-discipline in the development stage, and the creation of the Chinese Medical Association Pain Society (1992) marked the rapid development of this emerging discipline and its gradual maturation. Pain has been ranked by modern medicine as the fifth most important vital sign after whistle, pulse, blood pressure and body temperature. Some chronic pain is a disease in itself (e.g. trigeminal neuralgia, postherpetic neuralgia, etc.). Long-term local pain can form a complex local pain syndrome or central pain, making ordinary pain very intense and difficult to treat, leading to dysfunction of various systems of the body, reduced immunity and inducing a variety of complications, or even disability or endangering the life of the patient. Chronic pain not only seriously affects the physical, psychological and social functions of the patient, but also affects his or her family and even society. Providing treatment for all pain patients is a common goal of healthcare services in all countries. The medical staff of the Pain Department treats a wide range of acute and chronic intractable pain to create a pain-free and easy life for patients. The pain clinic can treat the following diseases using nerve block, ozone, radiofrequency and small needle with drugs: 1. headache: migraine, cervicogenic headache, myotonic headache, post-traumatic headache and post-lumbar puncture headache, etc. 2, neuralgia: trigeminal neuralgia, intercostal neuralgia, sciatica, acute herpes zoster, post-herpetic neuralgia, neuropathic pain, pain after nerve injury, central pain, affected limb pain, stump pain, diabetic neuralgia, sympathetic nerve-related pain, complex local pain syndrome, etc. 3.Cervical spine, lumbar spine, bone and joint pain: lumbar leg pain, cervical spondylosis, lumbar disc herniation, knee arthritis, heel pain, gouty arthritis, temporomandibular joint dysfunction syndrome, degenerative osteoarthritis, pain syndrome after cervical and lumbar spine surgery, etc. 4.Tissue pain: acute and chronic lumbar sprain, lumbar muscle strain, supraspinatus interspinous ligamentitis, lumbar dorsal myofasciitis, pear-shaped muscle syndrome, fibromyalgia syndrome, tenosynovitis, frozen shoulder, tennis elbow, soft tissue injury. 5, visceral pain: intractable angina pectoris, myocardial infarction, chronic pelvic inflammatory disease, abdominal plexus pain. 6, ischemic pain: Raynaud’s disease, occlusive thrombotic vasculitis, thrombophlebitis, erythematous limb pain, reflex sympathetic dystrophy, etc. 7, cancer pain: advanced cancer pain, bone metastatic pain, etc. 8, dysmenorrhea, chronic pelvic pain. 9, painless abortion. 10.Non-painful diseases: intractable eruption (diaphragm beating), acute facial neuritis (facial palsy), facial muscle spasm, sudden deafness, tendon sheath cyst, liver and kidney cyst. Neurodermatitis, sudden deafness, inner ear dizziness, scar pain, facial muscle spasm, eyelid spasm, plant nerve dysfunction. 11.All kinds of chronic, complex and intractable pain with difficult etiological diagnosis. 12.Anesthesia consultation: pre-surgical anesthesia examination and preparation, anesthesia and post-surgical analgesic program development. Pain ward Mostly CT or C-arm X-ray imaging interventions are used to treat the following diseases: 1. cervical and lumbar disc herniation. The use of CT or digital imaging C-arm intervention for cervical and lumbar disc herniation under the nucleus pulposus chemolysis therapy, radiofrequency minimally invasive neurointerventional analgesia, and ozone therapy under intervention can provide effective treatment for cervicogenic headache caused by high cervical disc herniation, for neck and shoulder upper limb symptoms caused by low cervical disc herniation, and for early control and cure of patients with paraplegic tendency. Patients with lumbar disc herniation are treated with extra-disc and intra-disc nucleus pulposus chemical lysis or combined intra-disc and extra-disc lysis, radiofrequency target treatment under intervention, radiofrequency treatment of the posterior branch of the crestal nerve under intervention, and posterior branch phenol glycerol destruction treatment, etc. The therapeutic effect has been recognized, and the long-term effect is even better than surgery. 2.Trigeminal neuralgia: trigeminal nerve hemimelia destruction treatment under CT intervention using drugs and/or temperature-controlled radiofrequency electrocoagulation can effectively control intractable trigeminal neuralgia. 3. Severe pain in advanced cancer. Nerve destruction treatment under imaging intervention can effectively control the pain of cancer that is not well controlled by general drugs. 4.Herpes zoster pain and post-herpes zoster neuralgia. Continuous nerve block therapy for pain control and combined antiviral therapy can effectively treat the severe pain of herpes zoster and reduce the incidence of postherpetic neuralgia. The postherpetic neuralgia is effectively controlled by nerve destruction treatment under imaging intervention. 5. Sympathetic nerve-related diseases such as vasculitis and Raynaud’s disease. The pain is controlled or improved by sympathetic nerve block or destruction treatment under CT imaging intervention.