The invention relates to a monitoring device, namely, a rotary control platform for monitoring. The rotary control platform for monitoring comprises a base, wherein one end on the base is provided with a stepping motor, the stepping motor is connected with a rolling screw rod, the rolling screw rod is provided with a sliding block platform for bearing a camera, two sides of the rolling screw rod are provided with linear guide rails, and two sides of the sliding block platform are connected to the linear guide rails in a penetrating way. The camera is arranged on the sliding block platform which can slide, thus linear moving of the camera can be realized, the camera shooting range is larger, the camera shooting is more flexible, the camera shooting effect is increased, and the using needs in different occasions can be met.