Vaccine is an automatic immune agent for the prevention of infectious diseases, which is made of pathogenic microorganisms (such as bacteria, viruses, etc.) and their metabolites through artificial virus reduction, inactivation or genetic engineering. According to the different types of infectious disease pathogens it prevents, it can be roughly divided into bacterial vaccines and viral vaccines. Many viral vaccines used in the population now need to be prepared through the process of virus culture, purification, concentration, inactivation or lysis. Because virosomes are a kind of parasitic microorganisms specialized in host cells, their reproduction needs to be carried out in their specific host cells. Therefore, the cultivation of viruses in the production of viral vaccines requires the cultivation of animal cells in which the virosomes can reproduce first.