Trigeminal neuralgia is known as the “king of pain”, and every time the patient’s face is cut, electrocuted or burned, the pain is unbearable and can be triggered by daily actions such as brushing teeth, washing face, eating and talking. The pain is so severe that it is unbearable. The traditional treatment for trigeminal neuralgia is to take drugs such as carbamazepine, but the effect is poor, and the side effects of carbamazepine are very high and difficult for patients to tolerate. In the last decade or so, a new treatment for trigeminal neuralgia has become the international mainstream, namely radiofrequency thermal coagulation for trigeminal neuralgia. Radiofrequency thermocoagulation for trigeminal neuralgia means that under the guidance of X-ray or CT, the doctor slowly punctures a fine radiofrequency needle into the patient’s foramen ovale, and a frontal and lateral film shows the depth of the puncture, and then a nerve stimulator is used to precisely locate the affected trigeminal nerve. After making sure there is no error, a small amount of local anesthetic is injected and the radiofrequency instrument is activated to perform radiofrequency thermocoagulation of the trigeminal nerve to thermally coagulate the diseased trigeminal nerve. The whole procedure takes about one hour, and the patient is awake with no obvious discomfort. Radiofrequency thermal coagulation has many advantages in the treatment of trigeminal neuralgia. The first is high safety. Due to the use of X-ray or CT positioning, there is also a nerve stimulator to escort the patient, so the treatment is really on target. Secondly, it is non-invasive. The radiofrequency needle used in radiofrequency thermal coagulation is very thin, leaving only a “needle eye” after the procedure, without some complications of surgery. Thirdly, the efficacy is very good. Radiofrequency thermal coagulation is equivalent to target removal, the satisfaction rate is more than 95%, much higher than any other method. Finally, the cost is relatively low. Because of the above advantages, radiofrequency thermal coagulation has become the preferred method for the treatment of trigeminal neuralgia internationally.