Facial palsy (facial nerve palsy), also known as facial neuritis, Bell’s palsy. It is commonly known as “crooked mouth”, “crooked mouth”, “hanging line wind”, “hanging slant wind”, “crooked mouth wind” and so on. “It is a common disease characterized by dysfunction of facial expression muscles. The most common symptom is crooked mouth and eyes. It is a common and frequent disease, and is not restricted by age or gender. The patient’s face is often unable to complete even the most basic movements such as raising the eyebrows, closing the eyes, puffing the cheeks and nuzzling the mouth. Analysis of causes ①Infection: It is one of the main causes of facial palsy. This infection is mostly seen in summer and is regional in nature. Causes of facial palsy include local infections, malaria, scarlet fever, polycystic cranial neuritis, influenza, mumps, meningitis, etc. can cause it. ②Traumatic: The most common causes of facial palsy among traumatic causes are facial trauma and temporal bone fracture. ③Medical: Facial palsy is caused by tonsillectomy, dental treatment, mastoid surgery, parotid surgery oral cancer radical surgery, etc. ④Idiopathic facial palsy: Idiopathic facial palsy is caused by cold behind the ear, wind blowing on the face, and weak body resistance. ⑤Poisoning: Poisoning can also cause facial palsy, and common ones include carbon monoxide and alcohol poisoning. ⑥Neurogenic: This condition is often caused by intracranial non-traumatic neurogenic, cerebrovascular disease. Preventive measures ① Keep away from wind and cold: Blowing cold wind and being stimulated by cold water are the most common pathogenic factors. Therefore, avoid direct blowing of air conditioners and fans. Outdoor riding, bathing and drinking should also be careful not to let the wind blow directly on the head and face. ② Pay attention to rest: During the prevention and treatment of facial palsy, you should pay attention to rest to ensure sufficient sleep, avoid watching TV and computer, and avoid various mental stimulation and excessive fatigue to facilitate the recovery of the disease. ③Psychological stress reduction: when facing pressure from work, study, social life, family life and other aspects, you should learn to self-adapt to confide in, listen to music, travel, appropriate exercise, etc. ④Appropriate exercise: in the morning and evening, according to their own situation, choose some suitable sports. If long-term persistence will make the body cycle to improve the wind and cold susceptibility and resistance will also be greatly enhanced. ⑤ Reasonable diet: eat less greasy and stimulating food. It is recommended to eat easily digestible food, such as vegetables and water peaches, grapes, etc. ⑥Timely medical treatment: Once the onset of the disease, promptly regular hospital treatment.