Abstract: An ultraviolet (UV) sterilization apparatus includes a main power input unit to receive main power from a vehicle; an auxiliary power input unit to receive auxiliary power from an auxiliary battery; a main power detection unit to detect a state of main power input from the main power input unit; an auxiliary power detection unit to detect a charging state of the auxiliary battery; a vehicle information input unit to receive vehicle information for determining a state of the vehicle; a power conversion unit to switch between the main power and the auxiliary power input from the main power input unit and the auxiliary power input unit; a plurality of UV modules installed at a plurality of locations in the vehicle and configured to irradiate UV rays; an UV driving unit configured to drive the plurality of UV modules; and a control unit to operate features thereof.