The pain caused by trigeminal neuralgia is unbearable for most patients, and individual patients choose to commit suicide because they cannot bear the pain. The nature of trigeminal neuralgia pain is paroxysmal electric shock-like, knife-like, burning-like and tearing-like pain. Some patients, in order to relieve this pain, hit the painful area with their fists when the pain appears, or rub one side of the face with rough objects, resulting in rough and dark skin, which seriously affects the image of patients. Trigeminal neuralgia is mostly caused by blood vessels compressing the trigeminal nerve root, and the pain is triggered by various factors such as: breeze, yawning, washing the face, eating, etc. The pain is distributed in the gums, teeth, upper and lower lips, nose, corners of the mouth and buccal mucosa. To relieve pain in these areas, it is necessary to decompress the trigeminal nerve that is compressed by blood vessels. In microvascular decompression treatment, the blood vessels compressing the trigeminal nerve are removed under a microscope, so that the trigeminal nerve can be decompressed and the pain symptoms can disappear. “Microvascular decompression” is a minimally invasive surgery, which is performed under a microscope with several times of magnification, so that the location of the blood vessels compressing the trigeminal nerve can be clearly seen, without causing damage to the blood vessels or nerves, and greatly reducing the risk of surgery. It has now become the preferred method for the treatment of trigeminal neuralgia. This technique is characterized by high cure rate, low recurrence rate, good safety and low incidence of complications.