Facial muscle spasm, also known as facial muscle twitching, is a very painful disorder in which the unilateral facial muscles keep twitching or jumping, seriously affecting the aesthetics and daily life, and even causing lack of self-confidence and depression. Previously, the only treatment for the spasm was botulinum toxin injections into the face, which only lasted for a few months and then needed to be injected again, not a cure. New research findings have shown that facial spasms are the result of increased excitability of the facial nerve, and that the main cause is vascular compression as well as throbbing stimulation. According to this theory, the compressed blood vessels are stripped from the nerve and padded with insulating material to reduce the excitability of the nerve and cure the symptoms of facial muscle spasm, and this procedure is called microvascular decompression. This procedure is called microvascular decompression. It requires only a 5 cm skin incision behind the ear, short hospital stay and few complications. At present, the Department of Neurosurgery of Southwest Hospital has combined international and domestic experience to carry out microvascular decompression, which has an overall efficiency of 80-90% in the treatment of facial spasm and a low recurrence rate, and the project has also won the Grade IIB New Technology and New Business Award. Typical case: Lu, male, 33 years old, was admitted to the hospital with right-sided facial twitching aggravated for more than 6 years and more than 3 years. The patient began to have right-sided facial (corner of the mouth and eyelid) twitching without obvious cause in July 2003, with each attack lasting about 2-3 minutes, 4-5 times each, without facial pain and no discomfort between attacks. He had visited several hospitals and was diagnosed as “facial muscle spasm”, and oral medication and acupuncture were ineffective. In the past 3 years, the right facial twitching symptoms were more frequent than before and lasted for a long time, ranging from 5-6 minutes to even 10 minutes. The patient was admitted to the hospital and underwent microvascular decompression of the right facial nerve. During the operation, the pulsatile compression of the vertebral artery below the facial nerve and heavy arachnoid adhesions were found, so microvascular decompression and release of arachnoid adhesions were performed, and the facial nerve was wrapped with insulating material. After surgery, the patient recovered well and the right facial twitching completely disappeared.