Vaccination is one of the most effective health protection measures, as it produces antibodies in the body, giving it specific immunity. Vaccination is one of the most effective health protection measures. The main function of the vaccine is to produce antibodies in the body of the vaccinated person after inoculation, so as to enhance the body’s ability to resist the disease. When the vaccinated person comes into contact with such pathogenic bacteria again, he or she can resist the invasion of the pathogen. Its significance is to prevent the corresponding pathogenic bacteria infection, such as the new crown vaccine can be targeted to prevent the infection of the new crown virus, but also can reduce the probability of infection into severe infection. In areas where some diseases are endemic, mass vaccination is the main way to prevent epidemics, which can significantly reduce the infection rate and control the spread of the disease as much as possible. It is recommended that individuals be actively vaccinated with relevant vaccines to maintain their health, provided that their physical condition permits.