A driving support device comprises a steering wheel 30, a protection window 211, a camera 21 for photographing a region around the own vehicle through the protection window, a display unit 50, a driving support unit 10, and a washer for washing the protection window. The driving support unit has the washer wash the protection window, when a magnitude of a steering angle of the steering wheel changes a value smaller than a threshold wash angle to a value equal to or greater than the threshold wash angle. The driving support unit has the display unit start, a display of a turn screen (530 and 550), when the magnitude of the steering angle changes from a value smaller than a threshold display angle which is greater than the threshold wash angle to a value equal to or greater than the threshold display angle.