The interval between the second dose of New Crown Recombinant Subunit Vaccine should be at least 4 weeks before the third dose. The third dose of the inactivated New Crown vaccine should be given after an interval of 6 months between the second dose. Three doses of New Crown Recombinant Subunit Vaccine are required, with an interval of greater than 4 weeks between doses, and all three doses should be completed within 6 months of each other to avoid compromising the effectiveness of the vaccine. The full course of immunization with New Crown Inactivated Vaccine is a two-dose course. The third dose, the booster dose, is given 6 months after the full inactivated vaccination, as the antibody decreases over time. Adverse reactions such as dizziness, fatigue, nausea, muscle aches and pains may occur after receiving the new crown vaccine. Vaccination is not recommended for people who are allergic to the ingredients, people who are running a fever, people with chronic diseases, and people who are pregnant. Before vaccination, inform the doctor of your own health condition and clarify whether there are any relevant contraindications. If there is no relevant contraindication, the vaccination should be carried out in time and observed for 30 minutes after vaccination before leaving.