The invention discloses a laser night vision device special for a motorway. The laser night vision device comprises a camera, a filter lens and a light supplementing device, the filter lens is arranged in front of an imaging lens of the camera, the filter lens is used for filtering out visible light, the light supplementing device is a laser illuminator, and the filter lens is connected with a driving mechanism driving the filter lens to be separated from the imaging lens and to exactly face the imaging lens. Due to the fact that the device is provided with the filter lens and the light supplementing device, the filter lens can filter out the visible light, no matter how strong the light of a car lamp is at night, shooting cannot be influenced, meanwhile, the light supplementing device can emit lasers, and shooting of the camera is facilitated. Therefore, according to the device, the influence of the car lamp and environmental light on imaging of the camera can be filter out, and therefore the effect of night-vision monitoring is achieved. The state of night monitoring and the state of daytime monitoring can be switched, and the effect of white light monitoring equipment is prevented from being influenced.