PROBLEM TO BE SOLVED: To provide a method and a device of producing sterilized vegetable using ozone gas that can make sterilizing power greater than conventional sterilizing power using facilities comparable with conventional facilities.SOLUTION: A method of producing sterilized vegetable includes: an ozone water production step of producing ozone water by causing ozone gas to come into contact with water using an ozone water production device 1 an ozone water sterilization step of sterilizing vegetable by causing the ozone water produced in the ozone water production device 1 to come into contact with the vegetable in an ozone water sterilization tank 2 and an ozone gas sterilization step of sterilizing the vegetable by causing remaining ozone gas remaining after coming into contact with the water in the ozone water production device 1 to come into contact with the vegetable in an ozone gas fumigation tank 4.COPYRIGHT: (C)2015,JPO&INPIT【課題】従来と同程度の設備を用いて、従来よりも殺菌力を向上可能な、オゾンガスを用いた殺菌野菜の生産方法及びその生産装置を提供する。【解決手段】オゾン水生成装置1を用い、オゾンガスを水に接触させることでオゾンガスを生成するオゾン水生成工程と、オゾン水生成装置1で生成したオゾン水を、オゾン水殺菌槽2で野菜と接触させることで野菜を殺菌するオゾン水殺菌工程と、オゾン水生成装置1で水との接触後に余剰となった余剰オゾンガスを、オゾンガス燻蒸槽4において野菜と接触させることで野菜を殺菌するオゾンガス殺菌工程と、を含むようにする。【選択図】図1