Before the reform and opening up, people were not rich and lived in bungalows, which were open to the air, and in the winter, when they were exposed to the cold (outdoors) in a warm environment (indoors), facial paralysis was common. There is no shower bathroom at home, and the public bath becomes the only choice for people. After the bath, the coupling is open, out of the bath, cold wind blowing, behind the ear by the wind facial paralysis when hair. In summer, there is no air conditioning, indoor heat is unbearable, reclining chairs and sleeping in the open, the temperature drops at night, the wind behind the ear frequently occurs facial paralysis. After the reform and opening up, people’s living environment has been improved greatly. Cottages are extinct in the city, high-rise buildings are erected, air-conditioners are popularized, and cars are popularized. The triggering factors of facial paralysis changed. The following situations became the main triggers of facial paralysis: opening the window on the balcony in winter and blowing the wind for too long; going out and neglecting the protection behind the ears; small gatherings in friends’ restaurants and going out without scarves and hats; going into the door of the building and taking off the hats beforehand; driving with the windows rolled down to ventilate the car; air-conditioned cars come out and do not pay attention to the protection behind the ears; entering the cooler air-conditioned rooms suddenly in the summer from the outdoors; blowing the air-conditioning after taking baths; blowing the air-conditioning when going to sleep; driving with windows opened to drive around in the wind. The above mentioned triggering factors of facial paralysis, we should avoid the above situations in our life. Prevention of facial paralysis is actually very simple, is to strengthen the body to avoid wind behind the ears, to avoid a sharp drop in temperature behind the ears, if you have to be in the cold wind, you can use your hand to gently soften the wind pool points behind the ears, so that the coupling closed. Winter scarves and clothes with hats can prevent wind behind the ears, prevent facial paralysis. It can be said that “pay attention to the details of life, it is meaningful to prevent facial paralysis”.