An object of the present invention is to provide a driving assistance device which it is easy to instinctively manipulate without causing a driver to feel a sense of discomfort. According to the driving assistance device according to the present invention, when it is instructed to perform automated driving using an automated driving switch and a destination has been set using a destination setting unit, an ECU generates a route for automated driving to the destination and starts the automated driving. When a destination has not been set using the destination setting unit and it is detected that the driver has travel continuation intention by a travel intention detection unit, the ECU generates a route for automated driving along the road and starts the automated driving. When a destination has not been set using the destination setting unit and it is detected that the driver does not have the travel continuation intention by the travel intention detection unit, the ECU generates a route for automated stopping and starts the automated driving. Therefore, since the automated driving automatically starts based on the intention of the driver, the driving assistance device is easy to instinctively manipulate without causing the driver to feel a sense of discomfort.