The invention provides a vehicle door rearview mirror device. An electric storage unit is accommodated in a mirror housing, and an electric motor is accommodated between a motor case and a motor coverthat constitute at least a part of the electric storage unit. A motor enclosure of the electric motor is sandwiched between the motor case and the motor cover in such a manner that a cushioning member made of an elastic material is sandwiched between the motor enclosure and the motor cover. In the vehicle door rearview mirror device, it is possible to easily confirm whether the cushioning memberis reliably interposed between the motor enclosure and the motor cover and prevent the cushioning member from falling or being displaced during assembly so as to improve the assembling property. The cushioning member (43) has, integrally, a cushioning member main portion (43a) interposed between the motor cover (36) and the motor enclosure (42) and a penetrating shaft portion (43b) penetrating a through hole (50) in the motor cover (36) to project outward.