The medium-sized long endurance reconnaissance and strike integrated fixed wing unmanned aerial vehicle system adopts a high-performance aerodynamic design with a composite material fuselage, which has the characteristics of long endurance, wide range of use, and rich load types. It can simultaneously carry mission payloads such as electro-optical pods, communication equipment, navigation equipment, small synthetic aperture radar, reconnaissance cameras, etc., and can perform tasks such as communication relay, target search, positioning, and strike. The system configuration is flexible, easy to disassemble and assemble, and has the conditions for land, air, or sea transportation. It can quickly complete transition deployment according to task needs.