The 14-day interval between the first and second doses of the New Crown vaccine does not meet the current New Crown vaccination requirements. However, there is no need to be overly concerned if the vaccination was administered early and two doses of inactivated Neocrown vaccine have been completed with a 14-day interval between the two doses. According to the guideline requirements, for those who have completed two doses of inactivated New Coronavirus vaccination in 14-21 days, they can also get the immunization effect without the need for catch-up vaccination. At a later stage, there is a clear rule for inactivated New Coronavirus vaccine in China that the interval between the first and second doses is ≥ 3 weeks and that two doses of vaccination need to be completed within 8 weeks. With this regulation and then vaccination with the new crown vaccine, it is necessary to vaccinate according to the specified interval. If the vaccination is not given according to the specified time, the interval between two doses is too short, which may increase the incidence of adverse reactions or lead to a relatively low amount of antibodies in the body, and although the immunization effect can generally be achieved, such vaccination is not recommended. There is also a recombinant subunit vaccine in China, which requires three doses at an interval different from that of the inactivated New Crown vaccine. The interval between two doses is ≥4 weeks, and three doses of the vaccine are required to be completed within 6 months. In addition, for vaccines requiring only 1 dose, i.e. adenovirus vector vaccine, there is no need to consider the timing of the second dose. When receiving vaccinations, be clear about the type of vaccine you are receiving and try to ensure that you complete the vaccination within the recommended window. Usually, the vaccination institution will also inform the recipient of the next vaccination at the time of vaccination, and some institutions will also inform the recipient in advance by phone at the appropriate time. If the recipient has special circumstances, he or she can consult the vaccination institution and ask the professional doctor for help.