Rare earth permanent magnet materials, such as neodymium iron boron, are essential key materials in modern industry. They have extremely high magnetic energy product and coercivity, which can stably provide a strong magnetic field. The application of rare earth permanent magnet materials has greatly improved the performance and efficiency of equipment in fields such as new energy vehicles, wind power generation, and energy-saving household appliances. In addition, rare earth permanent magnet materials also play an important role in strategic fields such as national defense technology and information technology. Therefore, strengthening the research and application of rare earth permanent magnet materials is of great significance for promoting technological progress and economic development.