The varicella vaccine is generally effective for life. Chickenpox vaccine is generally indicated for adults and children with no history of chickenpox to be vaccinated. Children between 1 and 12 years of age receive one dose, and those 13 years of age and older require two doses, with an interval of 6 to 10 weeks between the two doses. Varicella vaccine can stimulate the body to produce appropriate antibodies for the prevention of chickenpox and related complications. The immunization effect is long-lasting and generally can be lifelong immunity, and there will be no obvious decline. Therefore, it is recommended that people of appropriate age should be immunized in time to prevent chickenpox infection. Some other susceptible people, such as health workers, kindergarten staff, elementary school teachers, etc., should focus on chickenpox vaccination. Varicella vaccine virus is sensitive to acyclovir, vasiclovir and famciclovir. These medications should be avoided from 1 day before to 14 days after varicella vaccination. It is recommended that a doctor be consulted prior to vaccination, vaccination should be delayed in patients with severe febrile illnesses, and pregnant women should not be vaccinated.