A mounting device includes a slope including: a main plate for mounting a wheelchair； a vehicle-side plate provided between a vehicle and an edge of the main plate and having at least one plate； and a ground to be contacted-side plate provided between a surface of ground to be contacted and the other edge of the main plate and having at least one plate. The main plate can be raised and lowered between low and high positions when the ground to be contacted-side plate is in contact with the ground. The mounting device is also provided with: an electric winch that can tow the wheelchair along the slope； a slope driving mechanism that drives the main plate； and a control unit that, on the basis of the drive state of one of the slope driving mechanism and the electric winch, controls the drive state of the other.
