Definition: A nerve block is a direct injection of drugs or physical stimulation around or near nerves such as nerve trunks, plexuses, cerebrospinal nerve roots, and sympathetic ganglia to block nerve signal conduction; nerve blocks include both physical and chemical blocks. The use of nerve block-based methods to diagnose and treat pain and to make prognostic determinations of pain conditions is called nerve block therapy. Features of nerve block therapy: 1. Reliable analgesic effect. 2. 2.It is important for the diagnosis of the disease. 3.The treatment scope is selective. 4.The therapeutic effect is rapid. 5.Small adverse effects. 6.The efficacy is closely related to the operation skill. The mechanism of nerve block therapy: blocking the nerve conduction pathway of nociception, regulating the local environment causing pain, improving blood circulation, eliminating inflammation, common applications of nerve block therapy in pain treatment. 1. trigeminal nerve block therapy, applicable to the diagnosis and treatment of trigeminal neuralgia, postherpetic neuralgia. 2. 2.Glottopharyngeal neuralgia block therapy, applicable to the diagnosis and treatment of pharyngeal 3.Facial nerve block Applicable to the treatment of facial muscle spasm. 4.Cervical plexus nerve block Applicable to posterior occipital neuralgia. 5.Brachial follower nerve block Applicable to soft tissue pain in the neck, whiplash pain in the neck, neck and shoulder syndrome and frozen shoulder. 6.periarthritis pain point block Applicable to the treatment of periarthritis. 7.Thoracic nerve block, including intercostal nerve block and thoracic paravertebral spinal nerve root block. 8.Lumbosacral nerve block, applicable to sciatica, femoral neuralgia, saphenous neuralgia, lateral femoral cutaneous neuralgia, acute lumbar muscle injury and lumbar spine osteophytes. 9.Epidural nerve block. 10.Sacral canal treatment. 11.Stellate ganglion block.