The driving assistance device is adapted to have the first guide marker occupy a first position to ensure that the roadside occupies the first position in superimposed relationship with the first guide marker, at the time of making a judgment that an angle of the vehicle to the roadside is equal to a predetermined value, after the vehicle is moved toward the space in reverse gear with one maximum steering angle, and to have the second guide marker occupy a second position to ensure that the roadside occupies the second position in superimposed relationship with the second guide marker, at the time of making a judgment that the second guide marker is superimposed on the roadside, after the automotive vehicle is moved toward the space straight in reverse gear and the vehicle is parked, after the vehicle is moved toward the space in reverse gear with the other maximum steering angle.