At present, the mainstream surgical treatment for primary neuralgia (referring to neuralgia without tumor compression) mainly includes: 1. Microvascular decompression Suitable for neuralgia cases caused by intracranial microvascular compression of nerves. During surgery, the trigeminal nerve is found to have contact compression or limited arachnoid adhesions and thickening in relation to the surrounding microvessels that encircle and compress the nerve. The surgical method is to fully expose the compressed nerve, release the adhesions between the nerve root and the surrounding blood vessels, put a gelatin sponge between the compressed nerve and the blood vessels and also remove the thickened arachnoid membrane. 2.Gamma knife treatment Suitable for older patients over 70 years old and patients who cannot physically tolerate general anesthesia surgery.