In the past month, the proportion of coughing and wheezing patients in pediatric clinics in hospitals around the world has increased, and the proportion of children with diagnosed asthma having acute attacks has also been on the rise, why is this happening? It is the time of autumn and winter, when the weather changes dramatically and respiratory infections are likely to occur, which can also lead to acute attacks in children with asthma; another important reason is haze, which can lead to acute attacks of asthma and also to chronic coughing in non-asthmatic children, which can last for a long time and cannot be controlled. Haze contains a large number of suspended particles, known as PM2.5 particles, which are inhaled and deposited in the lower airways, where they stimulate coughing. In the current season and weather conditions, it is recommended to: 1. increase and decrease clothing at all times to avoid getting cold, but not sweating; 2. wear a mask when going out, preferably a medical gauze mask or an anti-haze filter mask; 3. children try not to go to crowded places, such as shopping malls, cinemas and other places; 4. do not allow children to inhale second-hand smoke; 5. when the air quality is good, open the windows at home to ventilate, and close the doors and windows when the haze is heavy If you have conditions, you can use an air filter; 6. If the cough is heavy and has affected the quality of life of the child, of course, to stop the cough; if the cough is not heavy, do not overly cough, suck in so many harmful particles, coughing can be these harmful particles out.