One-week-old baby chickenpox vaccine should pay attention to the vaccination before no cold, pneumonia and other diseases; vaccination pay attention to stay watch; vaccination site clean, do not take a bath immediately and other matters. 1. Before vaccination: before vaccination, if the baby suffers from fever, cough, cough sputum and other colds, pneumonia performance is not suitable for vaccination, need to wait for the recovery of the disease can be vaccinated, if the vaccine during the period of illness can cause some adverse reactions or cause the vaccine to be invalidated. 2. During vaccination: babies need to be observed in the vaccination unit for more than 30 minutes after vaccination to exclude whether there are allergic reactions such as dizziness, nausea, vomiting, rash, etc., and can leave if there is no adverse reaction. 3. After vaccination: avoid bathing within 24 hours after chickenpox vaccination to prevent infection of the vaccination site, and closely observe the temperature change (some babies may have fever after vaccination), keep the vaccination site clean and hygienic. Varicella vaccine belongs to class II vaccine, infants and young children are generally susceptible, if there is no clinical contraindication, in principle, need to give children at the appropriate age for chickenpox vaccination.