Common types of vaccines are live attenuated vaccines, whole inactivated vaccines, subunit vaccines and toxoid vaccines. Up to now, along with advances in recombinant DNA technology, genomics, virology and molecular immunology, they have had a great impact, opening up application directions in the production of new generation vaccines. Many vaccine design strategies have been studied and applied in the process of preventing and treating infectious diseases, in which DNA vaccines have shown to have promising prospects in new generation vaccines.