The typical manifestation of trigeminal neuralgia is episodic lightning-like, knife-like, burning-like pain in the trigeminal nerve distribution area of one side of the face. It is often accompanied by attacks when the trigger points of the face and oral mucosa are touched. In severe cases, it is impossible to open the mouth to speak, drink or eat, and some patients show toothache, which is not relieved after tooth extraction. Primary trigeminal neuralgia is not difficult to make a diagnosis based on medical history and clinical manifestations. Secondary trigeminal neuralgia is characterized by trigeminal nerve paralysis and persistent pain, often combined with other cranial nerve paralysis. It can be caused by multiple sclerosis, medullary cavity and skull base tumor. 2.Toothache: persistent dull pain, mostly confined to the gum area, and can be aggravated by hot and cold food. Local examination and radiological examination can be identified. Treatment: 1. Conservative treatment: oral carbamazepine (or Deltamethrin). 2.Surgical treatment Indications: The seizures are more than six months old, and the seizures are still not well controlled by oral carbamazepine, or there are obvious dizziness, nausea, unstable walking, depression, or long-term decrease of whole blood cells after taking the drug. Surgical procedure: Microvascular decompression. Specific approach: 4 cm incision in the hairline behind the ipsilateral ear, 1.5 cm diameter cranial borehole, microscopic exploration of the trigeminal nerve root, separation and Tefflon cotton to isolate the responsible vessels compressing the nerve.