A mounting device includes: a main plate on which a wheelchair is to be mounted a vehicle side plate provided between one end of the main plate and a vehicle body a ground side plate provided between another end of the main plate and a ground surface and first to third rotating shafts provided between the vehicle body and the vehicle side plate, and between each of the plates. A slope is configured to include the main plate, the vehicle side plate, the ground side plate and the first to third rotating shafts. The slope is provided so that the main plate is displaced between a low position and a high position by rotating the first to third rotating shafts using a drive mechanism.
