I. Nerve block and injection therapy 1, its mechanism of action are mainly, block the conduction pathway of pain, block the vicious cycle of pain, improve local blood flow, anti-inflammatory and pain relief. 2, nerve block classification and indications 1) sympathetic nerve block stellate ganglion block, treatment of various neurological dysfunctional diseases of the head and face such as, sympathetic / vertebral artery cervical spondylosis, facial nerve palsy, diligent abdominal plexus block: treatment of pelvic and abdominal advanced cancer pain, chronic pancreatitis, etc. Thoracic sympathetic nerve block: treatment of advanced lung cancer pain, sweating hand syndrome, etc. Lumbar sympathetic nerve block: lower limb sensory abnormalities, lower limb thrombo-occlusive vasculitis, etc. (2) cerebrospinal and peripheral nerve block epidural space block: lumbar spinal radiculitis, lumbar spinal stenosis, and herpes zoster of the lower extremities, etc. Occipital nerve block: cervical spondylosis, cervicogenic headache, occipital neuralgia and herpes in the innervated area. Lumbar/cervical plexus and peripheral nerve block: treatment of associated neuritis pain and entrapment disorders. Trigeminal nerve block: trigeminal neuralgia. Ligulopharyngeal nerve block: ligulopharyngeal neuralgia. 3）Local injection of lesions for various types of tendon attachment point inflammation, chronic injury, myofasciitis, etc. Interventional minimally invasive treatment technology is the direction of modern medical development. The main interventional techniques currently carried out by the pain department are: 1) cervical and lumbar disc chemolysis for cervical and lumbar disc herniation 2) laser vaporization decompression for cervical and lumbar disc herniation 3) radiofrequency therapy technology: it is one of the most promising modern treatment technologies in modern medicine, which has been widely used in cardiac conduction abnormalities, tumors and pain medicine clinics. Radiofrequency treatment technology, in peripheral radiofrequency is applicable to almost all diseases related to nerve block treatment. Trigeminal nerve radiofrequency thermal coagulation for trigeminal neuralgia, cervical and lumbar spinal nerve posterior branch radiofrequency treatment of posterior spinal nerve compression syndrome, radiofrequency thermal coagulation for cervical / lumbar disc herniation, etc. has been widely used in clinical practice. 4. Spinal cord stimulation technique for the treatment of pathological neuralgia. 5. Intrathecal morphine pump for advanced cancer pain 6. Plasma ablation for cervical disc herniation. 7. Intervertebral disc rotation for the treatment of disc herniation. 8. Vertebroplasty for osteoporosis or vertebral metastasis cancerous etc. III. Other treatment techniques, such as ozone injection therapy, physical therapy, etc. IV. Comprehensive drug treatment. V. Psychological assessment and psychotherapy, etc.