Chickenpox is a contagious disease, and if a child has chickenpox, he or she needs to be examined and treated by an infectious disease unit or an infection unit. The treatment of chickenpox is divided into general treatment, antiviral treatment and treatment of complications. General treatment includes avoiding skin rubbing or touching the blisters at the lesion, and active supportive therapy once the infection is found to be disseminated. Antiviral therapy mainly includes treatment with acyclovir and interferon. The earlier the antiviral therapy is given, the better. If treatment is given within 24 hours of the appearance of the rash, it can control the development of the rash and speed up the recovery. When there are complications, active treatment of complications is needed; when there is a co-infection, antimicrobial agents are needed; when there is encephalitis, treatment of cerebral edema is needed, etc.