Facial muscle spasm means twitching on one side of the face (individuals have bilateral spasms), and the more nervous and excited the spasm is, the more severe it is. The degree of twitching varies, and it is a paroxysmal, rapid and irregular twitching. The initial convulsions are light and last for only a few seconds, and then gradually grow longer for several minutes or longer, while the interval is gradually shortened, and the convulsions gradually increase in frequency. In severe cases, it is tonic, causing the ipsilateral eye to be unable to open, the corner of the mouth to be skewed to the ipsilateral side and unable to speak, often aggravated by fatigue, mental tension and voluntary movement, but it cannot imitate or control its onset by itself. A convulsion can last from a few seconds to more than 10 minutes, with intervals of variable length. The patient feels distracted and unable to work or study, which seriously affects the patient’s physical and mental health. Most of the convulsions stop after sleep. Bilateral lateral muscle spasms are rarely seen. If there is, it is often started on both sides successively, and most of the convulsions stop on one side, then the other side has another attack, and the convulsions are light on one side and light on the other side, and the simultaneous onset and convulsions on both sides have not been reported. A few patients have mild facial pain during convulsions, and individual cases may be accompanied by ipsilateral headache and tinnitus. There are many treatment methods, but intracranial microvascular decompression is the most common surgical method in international neurosurgery, and the efficacy is also the most reliable.