The invention relates to a refrigerator which can increase carbon dioxide in multiple spaces in an arrangement container and improve acidity on surfaces of vegetables for inhibiting corrosion caused by microorganisms adhered to the surfaces of the vegetables. In the refrigerator with a storage room composed of the arrangement container which is at least divided into a first space and a second space, when the arrangement container is accommodated in the refrigerator, the arrangement container is equipped with a cover part in a way of covering the opening of the arrangement container, a catalyst arrangement part is formed on a wall surface of separating the first space and the second space, the catalyst arrangement part is communicated with the first space and the second space, and the catalyst arrangement part accommodates transition metal catalysts for decomposing ethylene and trimethylamine.