The invention discloses a solar system planet motion simulation system, which comprises a simulation mechanism, a drive control system and a man-machine interaction and display system. The simulation mechanism comprises a support power mechanism, a revolution platform and an autogiration platform. The drive control system is connected with motors of the simulation mechanism and is used for drive control of motor operation of the revolution platform and the autogiration platform. The man-machine interaction and display system is used for inputting any date, and then, the drive control system controls the motors of the revolution platform and the autogiration platform to move to designated positions according to calculated positions respectively, and the information is displayed. The solar system planet motion simulation system can allow people to obtain visual understanding of motion of a planet, can simulate the position of the planet in a solar system in any date and can simulate rotation of the planet automatically according to the input equal-ratio speed (multiple of the actual speed).