DRIVING SUPPORT DEVICE

The present disclosure provides a driving support device which can notify a driver of the existence of other vehicles, even in a case of a function of detecting the existence of the other vehicle temporarily not being useable. A driving support device includes: a second vehicle detection unit which detects the other vehicle existing behind or ahead of the vehicle , based on the captured image, in a case of the vehicle detection function being determined as not normally operating, in which the notification control unit notifies the driver of the vehicle of existence of the other vehicle, in a case of detecting the other vehicle by way of the second vehicle detection unit