A vehicle height adjustment apparatus (10) includes: vehicle height adjustment units (12) respectively provided to correspond to wheels of a vehicle body, and adjusting a vehicle height in response to the supply and discharge of a working fluid; a supply source (26) of the working fluid; opening and closing valves (24) interposed between the vehicle height adjustment units and the supply source; and a control unit (56) adjusting a vehicle height for each of the vehicle height adjustment units to at least one of a first vehicle height suitable for at least one of boarding and deboarding, and a second vehicle height suitable for travelling, wherein when the control unit acquires preparation information indicative of the transition of a preparation state to at least one of boarding and deboarding preparation states, the control unit adjusts the vehicle height adjustment units from the second vehicle height to the first vehicle height.