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At present, the low-temperature refrigeration technology has been widely used in all aspects of social life . The chlorine Freon that the traditional gas loading refrigeration technology still used is releasing the green-house gases which has affected humanity’s ecological environment seriously. Therefore, seeking a novel, highly effective, unpolluted refrigeration way is urgent to be solved for the world now. Magnetic refrigeration technology is a new science and technology and is the tendency of future refrigeration. In this paper, we study the working principle of magnetic refrigeration technology and the option ways of magnetic materials, and we also compare magnetic refrigeration and gas loading refrigeration, followed by some critical magnetic technology: analyzing the magnetic field, designing the structure of magnetic body, the choosing of magnetic refrigeration cycle, Cold storage heat exchange technology. Finally, the present magnetic refrigeration prototype research situation, application prospect and basic problems of research of magnetic refrigeration field is presented.
