The incidence of trigeminal neuralgia is 182/100,000, and it is common in middle-aged and elderly people over 40 years old. Pain is the most prominent manifestation of the disease. Patients suffer from painful attacks, which are like cuts, burns, needles or electric shocks, often without aura before the attack, and suddenly occur and stop in a lightning-like manner, and when there is no attack, it is as normal. More than half of the patients can have “boarding point”, and the slightest stimulation such as talking, eating, touching, brushing teeth, etc. can cause seizures, so that patients act with extreme caution and even fear. After the seizure period, the natural interval can last from several months to several years. As the duration of the disease increases, the frequency of attacks increases, the degree of pain gradually increases, and the natural interval is gradually shortened or even the whole day. In the 1960s, Gardner, Jannetta and others proposed the theory of “vascular compression of nerves”. After years of clinical practice, this theory has been confirmed, and under the guidance of this theory, tens of thousands of trigeminal neuralgia patients around the world have been relieved of their pain through “microvascular decompression (MVD)” every year. With the accumulation of experience and the advancement of microsurgery technology, the surgical effect and safety have been greatly improved compared with the early days. At present, our hospital performs 1000~1700 MVDs every year, and the cure rate of trigeminal neuralgia is as high as 95% (with a follow-up of more than 3 years).