The present invention provides an electrolytic water generating device and a sterilization system. In the electrolytic water generating device which electrolyzes water for generating electrolyzed water, a circuit part which supplies the power for electrolysis is set to a state that the entering of water or electrolyzed water is prevented, the maintenance is excellent and the wiring is facilitated.The following components are accommodated in a box (50): a water tank (51), an electrolysis unit (52) which electrolyzes the water in the water tank (51) for generating the electrolyzed water, a water feeding pump (53) for feeding the electrolyzed water to the outside, and an electric device box (30) which accommodates a power circuit part (33) that supplies water for the electrolysis unit (52) and the water feeding pump (53), wherein the electric device box (30) is fixed with a state that the electric device box (30) is suspended in the midair from a bottom surface (50D) of the box (50). Thewater feeding pump (53) is configured below the electric device box (30).