The key to preventive measures is to avoid contact with pathogens. 1, during the flu epidemic, do not take your child to crowded, airy public places, and do not let your child come into contact with cold patients. 2, family members suffering from colds, should minimize contact with children, often open the windows to keep the indoor air fresh and clean circulation. 3.Close the doors and windows of your home tightly and then fumigate with vinegar, if necessary, use peroxyacetic acid spray or lactic acid fumigation to disinfect… 4.If the mother of a breastfeeding mother has a cold, wash her hands with soap as much as possible and put on a mask to feed; if there is a fever, milk can be squeezed out and boiled before feeding. 5. To improve the immunity of children’s upper respiratory tract and enhance the ability to resist upper respiratory tract infections. In addition, in the season of climate change, parents should strengthen the care of children, according to climate change in a timely manner to increase or decrease clothing. Because of the active, easy to sweat, do not wear too much clothing, and not according to the standards of adults, especially the elderly, but should be adjusted at the right time, the right temperature.