Trigeminal neuralgia is a disease characterized by recurrent episodes of severe lightning-like pain on one side of the face. The pain can be triggered by eating, talking or washing the face, and the duration of the attack varies from a few seconds to a few minutes, with intervals as usual, often relieved by oral carbamazepine. Temperature-controlled radiofrequency thermocoagulation is a minimally invasive treatment for trigeminal neuralgia with more definite clinical efficacy. The pain disappears immediately after the procedure, accompanied by mild numbness in the original painful area of the face, but does not affect eating, speaking and facial shape. The average hospital stay is 4-5 days with satisfactory results. The effectiveness rate is more than 98% (statistics of trigeminal neuralgia patients treated in our hospital in the past three years). Trigeminal nerve radiofrequency Intraoperative radiofrequency treatment to the elderly Intraoperative puncture needle positioning under C-arm