Abstract: The hypersonic target has the characteristics of high speed, high maneuverability and strong ability to fly around, which brings great difficulties to the cued search of radar. Aiming at the scene when the hypersonic target just enters the radar line-of-sight, this paper designs a phased array radar cued search strategy, and proposes a radar search airspace determination and search timing design method based on cue information. Firstly, predict the target's possible maneuvering airspace based on the target′s motion characteristics to obtain the search airspace range, and then determine the distribution probability density when the target crosses the screen. Secondly, determine the beam position arrangement area and the irradiation sequence according to the target distribution probability density. Simulation results show that the proposed cued search strategy can capture the target quickly with high probability.