Dysprosium chloride is an important rare earth metal compound composed of dysprosium and chlorine. It has special physical and chemical properties and is widely used in many fields. In the field of magnetic materials, dysprosium chloride is a key material for the preparation of high-performance dysprosium magnets, which are widely used in electric motors, generators, and magnetic resonance imaging. In addition, dysprosium chloride also has important applications in the field of optical materials and catalysts, which can be used to prepare optical glasses, laser materials and catalyze organic synthesis reactions. At the same time, dysprosium chloride can also be used to prepare other rare earth compounds, such as dysprosium oxides and dysprosium neodymium alloys. With the continuous development of science and technology, the application prospect of dysprosium chloride will be further expanded.