In clinical practice, facial palsy disease shows many symptoms, which seriously affects the daily life of patients. Here we ask our experts to talk to you about the causes of facial palsy disease. Most patients with facial palsy have a sudden onset, and the main symptoms are: the expression muscles do not close, the forehead and inter-brow wrinkles disappear, the eye fissures do not close completely, tears in the wind, the nasolabial fold flattens, the corner of the mouth is skewed to the healthy side, the affected corner of the mouth leaks air when chewing, chewing and biting the cheeks, the lip and cheek furrows accumulate food, and the corner of the mouth salivates. When individual female patients look in the mirror, they find that their faces become ugly, and they are afraid to see people, and their emotions change. Some produce anxiety, fear and melancholy emotions, some are tense and agitated, and some patients sigh and sigh for fear of not being cured and leaving sequelae, and their hearts are full of distress. Based on years of treatment practice, facial palsy patch believes that the main reason why people have facial palsy (or some people have a high probability of having facial palsy, for example, clinically someone has had facial palsy three or five times in their life) is that the person’s facial nerve immunity decreases and produces facial nerve microcirculation disorders. In this situation where the immunity of human facial nerve decreases, the causes of facial palsy disease are as follows: 1. Emotional causes (anger , fear, anxiety, tension); 2, cold (cool wind and cool water stimulation, sleeping with windows open, opening car windows, etc.); 3, cold, viral infection; and other factors triggered, it produces facial palsy. The above information introduces the causes of facial palsy. If we understand the causes of facial palsy, we can actively prevent facial palsy in our life.