The third and second doses of Recombinant Subunit New Crown Vaccine need to be given more than 4 weeks apart. The recombinant subunit NeoCrown vaccine is given at 0, 1, 2 months, which means that it needs to be given at an interval of 1 month later. Generally it is 4 weeks after the first vaccination and then the second vaccination, try not to have too long an interval, not more than 2 months is good, the interval between the third and the second vaccination should also be more than 4 weeks, try to finish the third vaccination within 6 months after the first vaccination. New crown vaccine needs to be completed within the prescribed vaccination time, so that the vaccine can produce sufficient amount of antibodies, so that the body can obtain effective immunity, and play a role in preventing new crown virus infection. If fever or other conditions that make the vaccination unsuitable occur during the prescribed time for the New Crown vaccination, the vaccination needs to be delayed. During the epidemic, it is recommended that people without contraindications receive the vaccine in a timely manner to reduce the risk of infection.