Trigeminal neuralgia is one of the more common, most persistent and painful painful diseases. Its main characteristic is that paroxysmal severe pain occurs within the distribution of the trigeminal nerve, which is often unbearable for patients during painful episodes. The basic treatment methods include: 1, drug therapy; 2, block therapy of trigeminal nerve trunk and semilunar ganglion; 3, radiofrequency thermal coagulation therapy; 4, gamma knife therapy; 5, microvascular compression therapy. Microvascular compression therapy for trigeminal neuralgia has been adopted by more and more scholars, but microvascular decompression involves craniotomy, which is relatively risky and difficult to accept for patients who undergo 2 times of decompression, while radiofrequency thermal coagulation of the semilunar ganglion is less traumatic and has exact effect, and can be treated again even if it recurs. Radiofrequency thermal coagulation of the semilunar ganglion for trigeminal neuralgia is widely used at home and abroad, and this treatment has been proven to be effective for many years, and it can indeed cure trigeminal neuralgia in a lasting way.