An apparatus and a method for sterilizing and preserving fresh products are provided by making the ozone gas and the carbon dioxide in a state of the gas mist to be in contact with the fresh product to sterilize and to keep freshness of the fresh product. It includes a gas supplying means 10 for supplying ozone gas, carbon dioxide, or mixed gas of them, a liquid supplying means 20 for supplying liquid, a gas mist generating means 30 for generating gas mist which is obtained by smashing and dissolving the gas supplied from the gas supplying means 10 and the liquid supplied from the liquid supplying means 20, a fresh food packing bag 60 for accommodating a fresh food 100 inside thereof and for forming a space for enclosing, inside thereof, the gas mist supplied from the gas mist generating means 30, and a degassing means for withdrawing the gas mist from the fresh food packing bag 60, wherein the ozone gas and the carbon dioxide gas are in the state of gas mist to be in contact with the fresh product 100 to sterilize and to keep freshness of the fresh product 100.
