Mobile video monitoring device

The utility model relates to the technical field of underground station construction monitoring, and particularly discloses a mobile video monitoring device, which comprises a camera body, a sliding rail mounted on a suspended ceiling, and a control box, the control box passes through a sliding part arranged at the top, the sliding part is connected to the sliding rail in a sliding manner, and a telescopic unit is arranged at the bottom of the control box. The bottom of the telescopic unit is fixedly connected with a spraying unit, the bottom of the spraying unit is connected with the camera body through a connecting unit, the surface of the camera body is further provided with a smoke detection unit, and the smoke detection unit is matched with the spraying unit arranged between the camera body and the control box. According to the invention, the camera body meets the monitoring requirement, the smoke detection unit can detect smoke in a tunnel, and when a dangerous case is detected, the spraying unit can ex