The present invention relates to a kind of new type low temperature composition for annealing device, the composition includes the hydrophobic compound (a) for being immersed in liquid form, high water absorbency polymer (b) particle and humidizer (d) with water (c). Hydrophobic compound (A), freezing point is less than 0 °C. The invention further relates to one kind be used for heat-treating apparatus, relate more specifically to it is a kind of for cooling down a part of human body or animal bodies, especially after wound, inflammation or surgical operation. Present invention can apply to therapy field and/or medical domain, but can also be applied to other field, such as the sub-cooled or heat preservation of food.
