Aimed at the problem that a singleplatform is hard to perform the continuous detection and stable tracking of near space hypersonic vehicle, a cooperative detection and tracking model is structured based on multiplatform. The spacenear spaceairground/sea cooperative detection system is put forward, the construction, time scheme and detection process are analyzed according to analysis of the combat characteristics and detection demands of NSHV. The cooperative detection platform is built up, and the static deploying and dynamic target detecting effect are analyzed by STK. The advantages of detection range and timeliness are verified with the simulation results, and these advantages make up the weakness of the single platform effectively. This will supply detecting and tracking this target in the future with an important technology foundation.