One target motion simulation method and experimental system were presented. The simulation system was constructed with the advantages of laser, such as high brightness, small divergency, small spot size. The transform from angle motion to two-dimensional (2D) space motion of small target was made with the technique of complex multi-axis and space projection. The inner close-loop control of motor was achieved by multimedia timer. The rolling speed was controlled with the technique of pulse width modulation (PWM). With these technique, the simulation precision was advanced. The moving velocity of simulation target was up to 10°/s. It′s precision was about less than 0.1°/s . The normalized standard deviation was 0.09. The system was small and easy to accomplish in engineering. It can be used as the simulation platform to verify the target acquiring, tracking system for a moving target within 2D space. The tracking standard deviation of the tracking system was 0.2 mrad.