The invention relates to a horizontal-moving orbit transferring mechanism which comprises at least two orbit transferring wheels and a parallelogram mechanism. The orbit transferring wheels are arranged on the parallelogram mechanism. The parallelogram mechanism is used for making the orbit transferring wheels synchronously move to one side of a vehicle under the drive of a drive motor. By means of the horizontal-moving orbit transferring mechanism, the two or more orbit transferring wheels are arranged, all the orbit transferring wheels synchronously act, the problem that in the prior art, the vehicle is likely to collide with an orbit in the prior art can be effectively solved, and the vehicle can run more stably and safely. The parallelogram mechanism is adopted for driving all the orbit transferring wheels to act synchronously, the structure is simple, the cost is low, and implementation is convenient, in addition, synchronism of all the orbit transferring wheels is very good, andorbit transferring is better achieved. Furthermore, in the running process, transmission of the horizontal-moving orbit transferring mechanism is stable, needed power is small, and in addition, accurate control over the orbit transferring process is better achieved.