Varicella vaccine is normally given as 2 doses. Varicella vaccine is normally given in 2 doses, i.e., the 1st dose at 12-18 months and the 2nd dose at 3-4 years of age. Some patients are not vaccinated according to this pattern, and the interval between the previous and subsequent doses should be at least 3 months. Before varicella vaccination, it is necessary to make sure that there are no cold symptoms such as fever, cough, nasal congestion, etc. to prevent exacerbation of the disease after vaccination. After vaccination, it is still necessary to observe whether there is fever or not. There is no age limit for varicella vaccination, but the earlier the vaccination, the better, so that antibodies can be produced as early as possible to avoid varicella virus infection. Before chickenpox vaccination, you need to consult your doctor in detail and exclude contraindications before vaccination, and the vaccination time can be delayed if you can’t get the vaccination on time for special reasons.