The Baculovirus expression vector system (Baculovirus expression vector system, BEVS) since it has high efficient expression ability, the restructuring of the virus is obtained by BEVS is easy to filter, has the function of modification after translation, expression of foreign genes efficiency is higher. BEVS can also express multiple foreign genes at the same time, at the same time of secretory protein biological activity increase production. Therefore, the BEVS is usually used in scientific research and industrial production in large scale preparation of recombinant proteins.