PROBLEM TO BE SOLVED: To provide a medical examination vehicle and a power supply system that allow power to be stably supplied to the vehicle.SOLUTION: A medical examination vehicle according to an embodiment comprises inspection information collection means, conversion means, and supply means. The inspection information collection means collects inspection information for subjects. The conversion means converts DC power supplied from the outside into AC power. The supply means supplies the AC power converted by the conversion means as power for allowing the inspection information collection means to collect the inspection information.