Self-funded vaccination is necessary but not mandatory, and patients can be judged according to their own situation. If the immunity is low, poor resistance and economic conditions allow, you can choose to play, on the contrary, you can choose not to play. Self-funded vaccines generally belong to the second category of vaccines, is a citizen of self-funded and voluntary vaccination of other vaccines, mainly including influenza vaccine, chickenpox vaccine, influenza B hemophilic vaccine, oral rotavirus vaccine and so on. Generally in the growth and development stage of children, the body function is not yet fully developed, usually lower resistance. They have a higher chance of contracting diseases, which is a threat to their healthy development. The necessity of vaccination for this group of people is greater and more effective. Vaccination is currently the main means of protecting health and preventing diseases, and can reduce the infection rate of infectious diseases. Vaccination enables the body to produce antibodies, enhances the body’s ability to immunoprotection and prevents the occurrence of infectious diseases. Therefore, self-funded vaccination is also necessary on a conditional basis.