Urticaria is a systemic respiratory disease caused mainly by viruses, and it occurs in winter and spring, mostly in children. Children with urticaria often have fever, runny nose and cough. Since urticaria is a respiratory disease, it is important to prevent urticaria by controlling the source of infection and cutting off the transmission route. The early symptoms of urticaria are mainly red bumps on the skin, accompanied by itching, and the lesions gradually become round or pockmarked rash-like damage, with pinhead to pea-sized blisters at the top, scattered or in clusters. The rash is a rash of flushes of varying sizes and shapes. It often occurs suddenly, in batches, and then fades rapidly after a few hours, leaving no traces after fading, but can recur. To prevent urticaria, you need to control the source of infection and cut off the transmission route. 1. Control the source of infection: It has been found that urticaria is mainly spread by respiratory droplets, so urticaria patients should preferably be hospitalized, and if they are treated at home, they should avoid going out and traveling to densely populated public places. 2, cut off the means of transmission: the room where the hives patients live should be ventilated frequently, because the hives virus can lose its pathogenic ability in direct sunlight or air circulation environment for about 20 minutes. For hives patients used clothing, bedding, etc. should be exposed to the sun, so as to help destroy the hives virus. If you have been in contact with a patient during the infectious period, you should do a good job of disinfection to remove the hives virus and avoid infecting susceptible people. In addition, the prevention of hives should also pay attention to the protection of susceptible people, for example, in the season of hives epidemic, parents should stop sending children who have hives to kindergartens to avoid infecting others.