PROBLEM TO BE SOLVED: To provide a moisture retention cold storage device that can replace a conventional dry ice or mechanical refrigerator, that can be manufactured at low cost, and that can minimize freshness deterioration.SOLUTION: The moisture retention cold storage device comprises: an accommodation portion 2 that includes an airtight accommodation space K and that can accommodate a cold storage target item S in the accommodation space K and a cold storage medium 5 that is arranged above the accommodation space K of the accommodation portion 2, that is filled within a liquid or gelatinous cold storage agent, that cools the accommodation space K of the accommodation portion 2 by fusion latent heat generated when the cold storage agent frozen in advance goes through a phase change from a solid phase to a liquid phase to make the accommodation space K cold insulated.COPYRIGHT: (C)2015,JPO&INPIT【課題】従来型のドライアイスや機械式の冷蔵庫に代わる、安価でかつ鮮度劣化を最小限に抑えることができる保湿保冷装置を提供すること。【解決手段】気密性を有する収容空間Kを有し、被保冷物Sを収容空間Kに収容可能な収容部2と、収容部2の収容空間Kの上方側に配置され、内部に液状又はゲル状の蓄冷剤が充填され、予め凍らせた蓄冷剤が固体から液体に相変化する際の融解潜熱により収容部2の収容空間Kを冷却して保冷する蓄冷部材5と、を備える。【選択図】図1