The invention relates to a novel ageing device which comprises a heat preservation cylinder and an ageing cylinder sleeved with the heat preservation cylinder. A steam device for generating steam for the ageing cylinder is arranged between the heat preservation cylinder and the aging cylinder, and comprises a water guide pipe, a heater and a flow guide screen, wherein the water guide pipe is used for guiding water into the bottom of the heat preservation cylinder, the heater is used for heating the water to generate the steam, and the flow guide screen covers the water surface to guide the steam to the ageing cylinder. According to the novel ageing device, due to the fact that the steam device is arranged between the heat preservation cylinder and the ageing cylinder, the steam is directly generated inside for the ageing cylinder, and compared with a traditional ageing box, the structure is simple, and cost is greatly reduced; the steam is directly generated inside for the ageing cylinder, inlet steam is even, steam charging is rapid, the humidity inside the ageing cylinder is even, and the ageing efficiency and the ageing effect on fabric are guaranteed.