The invention relates to an emergency cooling dehumidifying device, which comprises an ice storage assembly, wherein the ice storage assembly can be placed into an ice storage cabinet to be cooled by manufactured ice, a plurality of ice plates are arranged in the ice storage assembly, an air passage is formed between the adjacent ice plates, rolling wheels are arranged at the bottom of the ice storage assembly, and the ice storage assembly can be moved to a position requiring the temperature reduction in a room and is connected with a water collector. The emergency cooling dehumidifying device has the advantages that under the condition without electric power supply, the ice storage assembly can be conveniently and fast placed to an urgent needing position to meet the refrigeration requirements, a huge refrigeration system is omitted, the production cost is reduced, the repeated use can be realized, outwards flowing condensed water can be directly drunk, and the emergency cooling dehumidifying device conforms to environment-protection requirements.