Now some prevention methods are briefly introduced for your reference. 1, keep the home environment clean and hygienic, especially to keep the indoor air clean, diligent ventilation. Generally, upper respiratory tract infections are mostly airborne, so this one is especially important. If necessary, white vinegar can be heated in a pot for air fumigation and disinfection to cut off the transmission route. 2, strengthen the physical exercise of young children, can increase outdoor activities, running and jumping, can effectively enhance the child’s immune system. 3.Scientific diet. In spring, the Yang Qi rises, children are easily “on fire”. Therefore, the diet should be light, should increase the proportion of vegetables, fruits, avoid fried, fried, spicy food, especially stressed, Western fast food should be avoided. 4, try to reduce the activities to the crowded places. Like supermarkets and other crowded places, the air is dirty, easy to form cross-infection, greatly increasing the chances of disease. 5, for young children who are usually weak, you can apply drugs to prevent. For example, take Banlangen, Shuanghuanglian oral liquid, anti-viral oral liquid, etc.. However, it should be noted that most of these drugs are purgative and detoxifying, and should be avoided for children with a weak spleen and stomach, who should go to the hospital for medical advice. Personally, I would like to suggest that for children with weak immunity, you can get a flu shot from September to November every year, which can effectively improve immunity and reduce the number of colds.