In an on-vehicle information providing device including an input device 1 for inputting information corresponding to operation, on-vehicle information equipment 2 for executing processing corresponding to the information input, an active safety system 3 for monitoring surrounding conditions of the vehicle and generating caution information, a liquid crystal display device 4 for displaying a processing result of the on-vehicle information equipment, and a head-up display (HUD) 5 for displaying the information delivered from the on-vehicle information equipment or from active safety system, the on-vehicle information equipment sends, if any display interrupt request is made from the active safety system during execution of the display processing onto the HUD, a display switching control request to the HUD by suspending the display processing, and the HUD switches from a state of displaying the information from the on-vehicle information equipment to a state of displaying the information from the active safety system in response to the display switching control request from the on-vehicle information equipment.