The Baculovirus expression vector system (BEVS) has high expression capacity, and the recombinant virus obtained by BEVS is easy to screen, has post-translational modification function, and has high efficiency in expressing foreign genes. BEVS can also express multiple foreign genes simultaneously, increasing production while secreting bioactive proteins. Therefore, BEVS are commonly used in the preparation of large-scale recombinant proteins in scientific research and industrial production.