Cerium metal is a rare earth metal with many excellent performance advantages. Firstly, cerium metal has good chemical stability and can maintain stability in high temperature and corrosive environments, making it widely used in high-temperature alloys, catalysts, and fuel cells. Secondly, cerium metal has excellent redox performance and can be used as a rare earth metal hydrogen storage alloy and redox catalyst, which has a significant effect on environmental friendliness and energy conservation and emission reduction. In addition, cerium metal also has high magnetism and important application value in magnetic materials and magnetic hydrogen storage alloys. Cerium metal can also be used to prepare high-performance fuel cell catalysts and battery materials, and has broad application prospects in the energy field. Overall, cerium metal has important application value and broad development prospects in materials science, energy fields, and other fields.