The principle of radiofrequency thermal coagulation technology for the treatment of pain: through the radiofrequency instrument sends out high frequency radioelectric current, so that the target tissue ion movement friction heat nerve. Highly selective destruction of nociceptive nerve fiber conduction branch, blocking pain signals to the superior nerve conduction, destruction of pain transmission pathway, so that it can not be transmitted to the brain, can not produce pain sensation and experience, so as to achieve the purpose of pain control. Radiofrequency thermal coagulation target treatment is to directly denature, coagulate, contract, reduce the volume of the nucleus pulposus of the protruding disease-causing part, release the compression, rarely injure the normal nucleus pulposus tissue, while directly blocking the release of glycoprotein and beta protein in the nucleus pulposus fluid, the warm-heat effect on the injured fiber ring, nerve root edema, the inflammatory reaction in the spinal canal plays a good therapeutic role. Radiofrequency thermal coagulation destruction therapy clinical treatment scope 1, chronic, intractable, difficult pain. 2.Radicular pain of the spine (radicular compression pain, small joint disorders). 3, neurogenic pain (trigeminal neuralgia, postherpetic pain, stellate ganglion migraine, sympathetic nerve disorders). 4.Late stage cancer pain (to improve the quality of life of patients). 5.With the image, stereotactic head frame, microelectrodes and computer operation software can do intracranial destruction (neurosurgery, brain surgery). 6.With the professional intervertebral disc destruction electrode can do intravertebral disc thermal coagulation destruction. 7.Pulse destruction system: choose 42℃ reversible destruction temperature can achieve the least trauma and the least neuroinflammatory reaction. The method of intervertebral disc radiofrequency selects the puncture needle according to the puncture channel, passes the marking point, pierces the target point, and is confirmed by the X-ray machine. The RF machine is turned on, the formal connection is made, and the connection is confirmed to be secure. The radiofrequency machine shows an impedance between 250-150 ohms, and stimulation with high frequency 100Hz, current 0,8-1,0mA to confirm whether there are sensory fibers around, and low frequency 3Hz, current 2,0-3,0mA to confirm whether the motor nerve will be affected, and no contraction of the muscles innervated by the nearby motor nerve branch is safe. The method of neurothermal coagulation destruction is selected by the radiofrequency puncture needle, and after reaching the target site, the radiofrequency machine is turned on, the formal connection is made, and the connection is confirmed to be secure. The radiofrequency machine shows an impedance of 400-550 ohms, and stimulation with a high frequency of 100 Hz and a current of 0.8-1.0 mA is used to confirm that there are no surrounding sensory fibers and that pain can be induced, while stimulation with a low frequency of 3 Hz and a current of 2.0-3.0 mA is used to confirm that the motor nerve is not affected and that no contraction of the muscles innervated by the nearby motor nerve branches is safe. Advantages Radiofrequency treatment technology is minimally invasive, rapid analgesia, and has a low incidence of complications and side effects under proper operation. With the help of the electrical stimulation test and impedance monitoring system equipped in the radiofrequency instrument itself, the radiofrequency needle can be accurately placed to the relevant nerve site. By adjusting the amount of radiofrequency output power and setting the action temperature, the scope of the injury foci can be precisely controlled to avoid unnecessary side injuries.