Europium, as a precious member of rare earth elements, plays an important role in many high-tech fields with its unique physical and chemical properties. Europium metal not only has a high melting point and high density, but also has excellent luminous properties, which is an ideal choice for manufacturing fluorescent materials. In the optical and electronics industry, europium compounds are widely used in the manufacture of color television phosphors, high pressure mercury lamp phosphors and X-ray intensification screens, significantly improving the luminous efficiency and color brightness of products. In addition, the metal europium also has applications in the nuclear industry, such as as a neutron absorber in nuclear reactors, helping to control the nuclear reaction process. At the same time, with the advancement of science and technology, europium also shows potential applications in the field of biomedicine, such as radiation therapy.