In order to improve radar reconnaissance capability, how to collaboratively using the technology of surface ships and UAV is researched. The main factors that can be affected upon the ability of the shipborne radar reconnaissance equipment in practice are analyzed. According to the different operational requirements, three kind of shipborne UAV using strategies are proposed including the regional supplementary reconnaissance, the fixed-point increase reconnaissance and the high threat intensification reconnaissance. The key technologies of the collaborative radar reconnaissance technology of surface ships and UAV are discussed. The simulation results show that the UAV has positive significance for improving the radar reconnaissance ability of surface ships.