To enable to repeatedly use an article to be washed by ensuring washing and sterilization of the article to be washed with poor heat resistance.

This device is equipped with a nozzle 3 for jetting a washing liquid and an ozone water to the article to be washed accommodated in a casing 11 for accommodating the article to be washed. In addition, the device is equipped with a washing mechanism 17 which supplies washing water to the inside of the casing 11, jets the supplied washing liquid from the nozzle 3 by circulating the supplied washing liquid by a circulating pump 8c, and washes the article to be washed accommodated in the casing 11 with the washing liquid, and an ozone water sterilizing mechanism 18 which supplies the ozone water to the inside of the casing 11, jets the supplied ozone water from the nozzle 3 by circulating the supplied ozone water by the circulating pump 8c, and sterilizes the article to be washed accommodated in the casing 11 with the ozone water. Furthermore, in the device, the number of revolutions of the circulating pump 8c in circulating the ozone water is decreased to be lower than the number of revolutions of the circulating pump 8c in circulating the washing liquid.