Facial muscle twitching, also known as facial muscle spasm, is a relatively common clinical disease, mainly due to functional disorders triggered by stimulation of the facial nerve on one side. The main causes of facial muscle twitching are compression, idiopathic facial nerve paralysis, traumatic tumor or post-surgery, yin deficiency or weakness. 1, compression: is the most common cause of facial muscle twitching, is due to some kind of compression so that the facial nerve conduction interference, generally due to the posterior inferior cerebellar artery, anterior inferior cerebellar artery, vertebral nerve artery is compressed and caused. 2, idiopathic facial neuritis: idiopathic facial neuritis patients can appear secondary to the affected side of the facial muscle twitching, may be due to facial neuritis caused by the pathological changes in nerve demyelination and failed to return to normal. 3, traumatic tumor, post-surgery: the reason is due to the recovery process of facial nerve and other brain nerves short circuit, so that the other nerve excitation also appeared on one side of the facial muscle twitching caused by. 4, yin deficiency or weakness and qi deficiency: because of yin deficiency, blood deficiency, lack of nutrition of tendons or wind-cold interference in the face caused by facial muscle twitching. The causes of facial muscle twitching mainly include the above aspects, because facial muscle twitching has a greater impact on the body, so after the cause is clear, we must pay attention to, try to avoid recurrence.