A surroundings-monitoring device according to embodiments includes, as an example, a memory unit that stores therein captured image data output from an imaging unit imaging an area including a road surface in a forward direction of a vehicle and an area extending upward from the road surface and an output unit that outputs, to a display device, captured image data having been previously imaged by the imaging unit and including a road surface corresponding to a position of the current vehicle in the imaged road surface, from among the captured image data stored in the memory unit.