The procedure of varicella vaccination is as follows: 1. There are two doses of varicella vaccine, and it is recommended that babies receive the first dose when they are full-term, and the second dose when they are four years old after the first dose until they are four years old, if they have not had varicella. 2. If children aged 4-12 years have had a vaccination experience, they should receive the second dose, with a minimum interval of three months between the previous dose, and each dose should be given at the same time as other injections and non- injectable live attenuated vaccines, with corresponding intervals. Before receiving varicella vaccine, consult with the planned immunologist in detail to ensure vaccination safety. If there is tenderness, redness, swelling, or hardness at the injected skin site after varicella vaccination, or if there is a brief fever and mild rash 1-2 weeks after the injection, it usually does not require treatment and can recover on its own.