The invention discloses a rail traffic dynamic map platform control device. The device comprises a bottom box and a drive box, the top of the bottom box is provided with the drive box, the top of thedrive box is provided with a worktable, a motor is mounted at one end of the bottom face inside the bottom box, when a cam and a round shaft accidently fall off, a long plate falls downwards, a cushion block below a buffer rod makes contact with the ground, the buffer rod moves towards the interior of a buffer box, a spring exerts elastic force to a check block, inertia force of descending of thelong plate can be offset, breaking of a rail traffic dynamic map displayer can be avoided, and accidental losses can be reduced. When a sliding rod moves to the side away from the motor, the inner wall of the other end of a rectangular groove is in contact with a third transmission shaft, the sliding rod is controlled to rotate towards the direction again, firmness of the sliding rod is improved,the moving position of a rail traffic dynamic map on a mounting plate is controlled, and through control moving of the displayer, a worker can conveniently carry out control observation with monitoring screens.