Trigeminal neuralgia is a common condition with an acute onset, manifesting as an unbearable tearing and pins-and-needles pain with paroxysmal onset. The duration of pain is variable, from a few seconds or minutes to several hours. The pain is often triggered by chewing, brushing teeth, washing face, talking, and can be accompanied by twitching of the affected facial muscles, lacrimation, salivation and runny nose. Many patients are afraid to eat, wash their faces, brush their teeth and talk because of the fear of pain, which seriously affects their normal life. There are many previous treatments for trigeminal neuralgia, such as medication and posterior trigeminal nerve rhizotomy. But all of them are not treating the pain from the cause, and most of them are ineffective and easy to recur. At present, the most advanced treatment is to use microsurgery techniques, using small incisions to separate the blood vessels compressing the trigeminal nerve root from it, and to achieve pain relief from the root. The procedure is simple, using a small incision in the posterior cranial fossa to reach the root of the trigeminal nerve. Under the microscope, the small blood vessel is padded with a special cotton piece and separated from the trigeminal nerve root, and the patient can feel an immediate pain relief effect, and the intraoperative pain that has been bothering him for years is completely gone. Moreover, the surgery is less invasive, the recurrence rate after surgery is very low, and the small incision is located within the hairline, which does not affect the beauty in any way, so it can be said to be the most ideal treatment for trigeminal neuralgia at present. Similar to trigeminal neuralgia, intractable diseases such as glossopharyngeal neuralgia, facial muscle spasm, spastic diagonal neck, and intractable hypertension can be cured by similar methods