As a new type of refrigeration, magnetic refrigeration technology is receiving extensive attention in the environmental protection field. Compared with traditional refrigeration technology, magnetic refrigeration does not require greenhouse gases such as Freon, and is characterized by high efficiency, environmental protection and energy saving. Recent research shows that by optimizing the structure and properties of magnetic refrigeration materials, the energy efficiency of magnetic refrigeration systems can be further improved, and it is expected to replace traditional refrigeration systems in the future, and be widely used in the fields of home appliances and cooling of data centers, thus contributing to the mitigation of global warming.