The present invention relates to recombinant HA influenza virus-like particles (VLPs) derived from Baculovirus expression system, and their use in preparing protective influenza vaccine composition.本發明係關於藉由桿狀病毒表現系統製造流感病毒重組HA似病毒顆粒(VLP),及其用於製備保護性流感疫苗組成物。