The causes of facial palsy are still not particularly clear, but modern medical research has confirmed that the causes of facial palsy may be related to the following factors: first, low immunity and viral infection, which is a common cause of facial palsy. Second, irritation and cold to the facial nerve. Because it is often seen in the clinic that many people fall asleep due to lying down after drinking, due to the stimulation of cold wind on the face or stimulation by air conditioning, some people sleep on the floor and are prone to facial palsy, all these suggest that stimulation by cold or cold can lead to facial palsy. Therefore, it is recommended to pay attention to keep warm to prevent facial palsy from occurring in general. When facial palsy occurs, it is important to go to the hospital for appropriate treatment, including the use of acupuncture, and the taking of B vitamins. In addition, some patients may need to use small doses of hormones.