A vehicle height adjusting device, comprising: a changing unit (13, 22) capable of changing a relative position between a vehicle body of a vehicle and wheels (14, 21) of the vehicle; and a control device that controls the changing unit (13, 22), wherein the control device includes: a driving scene determination unit that determines a driving scene of the vehicle on the basis of driving information; and a control unit that controls the relative position in response to the determined driving scene; wherein the changing unit (13, 22) includes a front wheel side changing unit changing a front wheel side relative position, which is a relative position between the vehicle body and a front wheel, and a rear wheel side changing unit changing a rear wheel side relative position, which is a relative position between the vehicle body and a rear wheel, and the control unit performs control of changing at least one of the front wheel side relative position and the rear wheel side relative position in response to the determined driving scene; characterized in that the vehicle height adjusting device is configured to set the vehicle height on the front wheel side and the vehicle height on the rear wheel side in three stages, which are a high position, medium position and low position; the driving scene determination unit determines the driving scene of the vehicle as three types of scenes, which are city street, winding road and expressway; and when the determined driving scene is city street, both the vehicle height on the front wheel side and the vehicle height on the rear wheel side are set to medium, alternatively both the vehicle height on the front wheel side and the vehicle height on the rear wheel side may be set to low, when the driving scene is winding road, the vehicle height on the front wheel side is set to medium and the vehicle height on the rear wheel side is set to high, when the driving scene is expressway, the vehicle height on the front wheel side is set to high and the vehicle height on the rear wheel side is set to medium. a changing unit (13, 22) capable of changing a relative position between a vehicle body of a vehicle and wheels (14, 21) of the vehicle; and a control device that controls the changing unit (13, 22), a driving scene determination unit that determines a driving scene of the vehicle on the basis of driving information; and a control unit that controls the relative position in response to the determined driving scene; wherein the changing unit (13, 22) includes a front wheel side changing unit changing a front wheel side relative position, which is a relative position between the vehicle body and a front wheel, and a rear wheel side changing unit changing a rear wheel side relative position, which is a relative position between the vehicle body and a rear wheel, and the control unit performs control of changing at least one of the front wheel side relative position and the rear wheel side relative position in response to the determined driving scene; the vehicle height adjusting device is configured to set the vehicle height on the front wheel side and the vehicle height on the rear wheel side in three stages, which are a high position, medium position and low position; the driving scene determination unit determines the driving scene of the vehicle as three types of scenes, which are city street, winding road and expressway; and when the determined driving scene is city street, both the vehicle height on the front wheel side and the vehicle height on the rear wheel side are set to medium, alternatively both the vehicle height on the front wheel side and the vehicle height on the rear wheel side may be set to low, when the driving scene is winding road, the vehicle height on the front wheel side is set to medium and the vehicle height on the rear wheel side is set to high, when the driving scene is expressway, the vehicle height on the front wheel side is set to high and the vehicle height on the rear wheel side is set to medium.