Chickenpox is caused by varicella-zoster virus infection and is highly contagious. The treatment of three-year-old baby with chickenpox includes isolation, daily care, medication, etc., as follows: 1, isolation: must pay attention to isolation, do not let the child to go to public places, especially do not go to crowded places, so as not to infect the chickenpox virus to other children. 2, daily care: we must strengthen the child’s care, such as changing underwear diligently, cut the child’s nails short, and give the child gloves, etc., so as to be able to Prevent scratching the skin and reduce secondary skin infections. To maintain indoor air circulation, supply children with enough water and easy to digest food. 3, drug treatment: if the child’s skin itching is obvious, can be used locally compounded glycerite lotion, so as to reduce the itching of the skin, antiviral drugs preferred acyclovir, should be used as soon as possible. If the child secondary bacterial infection, can be given antibiotics for treatment, children’s chickenpox general prognosis is good.