Chickenpox is caused by varicella zoster virus infection. Its treatment principle is first to antiviral, second to prevent secondary infection, and third to enhance care. First, choose antiviral drugs, including acyclovir, generally oral or injected for a week. It can shorten the duration of the disease, improve the efficacy and reduce the spread of chickenpox. Second, to prevent secondary infection, if the blisters appear to rupture, you can use topical Bactrim and other topical rubbing 1-2 times to anti-infection treatment. If there is secondary systemic infection or pneumonia, it is necessary to control the infection treatment with static antibiotics. In addition, if the local itching is heavy, you can use topical Furfuryl with Keratan syrup for antipruritic treatment. In case of high fever, you can choose ibuprofen for heating treatment and avoid acetaminophen-based antipyretic drugs because it may have certain effects on the liver. In addition, the child should pay attention to rest, drink more water and ensure sleep; diet, eat well-digested food and replenish sufficient amount of water.