This standard specifies the terms and definitions, product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of food controlled atmosphere packaging machines. This standard is applicable to the use of protective mixed gases such as carbon dioxide, nitrogen, and oxygen, mixed according to the characteristics of the packaged food, to replace the air in the packaging box/bag, inhibit the growth and reproduction of food microorganisms, and extend the shelf life of the food, thereby achieving Food modified atmosphere preservation packaging machine (hereinafter referred to as packaging machine) with good preservation effect.