Abstract: According to the problem of spatial location for the moving object, the stereo vision technique and moving object detection in a single video sequence were combined. A stereo motion analyzing system was designed to achieve the goal of spatial location. It can expend the application range for the moving object detection issue in a single video sequence. According to the problems in the course of transition from monocular to multi-view, a solution was proposed based on the hardware. Combined the stereo lens with the high-speed camera, the problems of chip consistency, camera synchronization and the motion ghost can be overcome. Because the stereo images come from the one image, the traditional moving object detection method in a single video sequence can be used directly to obtain motion mask. Two groups of real experiments were taken by the system in full bright daylight conditions, containing free fall and slope movement. The results show that the system works stably and realizes the stereo motion analyzing capabilities for object. The absolute location error is less than 0.01 m at a range of 1 m.