Neodymium nitrate is widely used in the chemical field because it has unique chemical properties and can participate in a variety of chemical reactions as a catalyst or a precursor of catalysts. In organic synthesis, it can catalyze complex reactions such as the polymerization of olefins, participate in the formation of active centers, and help olefin molecules polymerize efficiently to form high-molecular polymers. These polymers are widely used in the production of materials such as plastics and rubber. Meanwhile, in terms of environmental protection, it can be used to catalyze the oxidative decomposition of harmful substances such as carbon monoxide and nitrogen oxides in waste gas, converting them into harmless carbon dioxide and nitrogen, which helps to reduce air pollution. It is precisely by virtue of the roles it plays in different chemical processes that it has a relatively wide range of applications in the chemical field.