Trigeminal neuralgia is a common neurological disease of the brain, with a high prevalence in middle and old age, after about 40 years of age, and slightly more female patients than male. The main symptom is the recurrent paroxysmal severe pain in the distribution area of the trigeminal nerve on one side of the face, which is unbearable like needle stabbing, electric shock or knife cutting. At the same time, the “trigger points” of trigeminal neuralgia are many and uneven. Patients often complain that the pain is aggravated when they wash their faces, brush their teeth, eat or talk, and some of them even have attacks when they walk or swallow saliva in the breeze. The repeated pain attacks seriously affect the physical and mental health of patients, as well as their normal life and work. Therefore, if trigeminal neuralgia is cured early, patients can be relieved of their pain as soon as possible. In the treatment of trigeminal neuralgia, the clinical drug of choice is carbamazepine, followed by oxcarbazepine and phenytoin sodium. Although the pain relief effect is significant, but long-term use or a large amount of use, the side effects are large, and the effect of the drug is only temporary relief of pain, and can not be cured. So can surgery cure trigeminal neuralgia? At present, there are many surgical treatments for trigeminal neuralgia advertised, and all of them can be cured, but patients still have to choose carefully because any surgery is risky, so before considering surgical treatment, patients must understand in detail the principle of surgery, whether it can cure trigeminal neuralgia, and whether it has a small risk factor and will not cause permanent damage to the nerves and face, etc. Obviously, to cure trigeminal neuralgia the cause must be identified first. According to clinical surveys about 70% of patients have primary attacks, and these pain attacks are due to pulsatile vascular compression at the sensory root of the trigeminal nerve into the pontine brain (REZ). Generally after hospitalization, a detailed preoperative physical examination and head MRI, which has scanning skills, is required to perform a thin scan of the trigeminal nerve, which can identify primary or secondary trigeminal neuralgia and can provide a basis for surgery. Approximately 20% of patients have secondary trigeminal neuralgia, mostly due to tumor compression, inflammation, vascular malformation and other obvious organic factors or functional lesions, and the pain is often described as persistent. Signs of lesions in the adjacent structures of the trigeminal nerve are detected by brain MRI scans and are easier to treat. For the treatment of primary trigeminal neuralgia, microvascular decompression is now preferred clinically. The principle is to apply microsurgical techniques to remove the blood vessels compressing the nerve and place special material decompression material between the nerve and the blood vessels to achieve the disappearance of facial pain after surgery. The advantage of microvascular decompression is that the nerve is not cut, the integrity and physiological function of the trigeminal nerve is preserved, and the facial sensation is preserved after surgery.