Chickenpox is an acute contagious disease and requires isolation after contracting the disease. The period of release from isolation is about 10 days, and for some cases with a longer duration of illness, the period of isolation should be extended. Chickenpox is caused by varicella zoster virus infection, mainly through respiratory droplet transmission, after infection, need to be isolated at home to avoid transmission to other healthy children. After infection with the virus, after the incubation period, usually in the first 2 days of the disease is infectious, until all the blisters are dry and crusted, its infectiousness can disappear. Therefore, the time of release from isolation is based on the crusting of the rash, which in most cases is about 10 days. The prevention of chickenpox is to avoid contact with chickenpox patients and their respiratory secretions and contaminated products, clothing and utensils should be stored and used separately, and if close contact with chickenpox patients occurs, you can go to the hospital early for chickenpox vaccination and immunoglobulin.