The new coronavirus vaccine is effective in preventing new coronavirus infections, and is required for all but those who are not suitable for the new coronavirus vaccine. People who are not suitable for vaccination include people with allergies, people with acute exacerbations of chronic diseases, and women during pregnancy. Neocoronavirus vaccine is a biological agent developed to prevent the new type of coronavirus infection that is currently prevalent. Neocoronavirus vaccine can effectively prevent neocoronavirus infection, but there are several categories of people who are not suitable for vaccination, such as people with acute exacerbation of chronic diseases, people with allergies, people with impaired immune function, and women during pregnancy. Due to the highly contagious nature of C.pneumoniae, it is recommended that people who are suitable for C.pneumoniae vaccination actively receive the vaccine, in addition to those who are not suitable for vaccination. Even if the patient has been vaccinated, it is recommended that the patient still needs to do a good job of protection, avoid going to indoor or closed places where people gather, actively wear a mask when going out, do a good job of personal hygiene, and follow the requirements of the specific prevention and control measures in each place. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.