Platinum catalyst is a general term for catalysts made of metal platinum as the main active component. Platinum metal mesh, platinum black, or platinum loaded on alumina and other carriers can also contain metal rhenium and other cocatalyst components. It is mainly used for ammonia oxidation, petroleum hydrocarbon reforming, oxidation and hydrogenation of unsaturated compounds, and removal of carbon monoxide and nitrogen oxides in gases. It is a catalyst often used in chemical, petroleum and chemical reaction processes. It has high catalytic activity, strong selectivity, convenient preparation of catalyst, and small amount of use. It can optimize the catalytic performance by changing and improving the manufacturing method and mixing with other metal or cocatalyst active components. It has a wide range of applications, can be regenerated and activated repeatedly, has a long service life, and the metal palladium of spent catalyst can be recycled and reused. Many kinds of platinum catalysts have become patented products and are widely used in all walks of life. Platinum catalysts with new structures and catalytic functions are still being developed, which not only makes it possible to achieve many difficult reaction processes catalyzed by platinum catalysts, but also makes many industrial production processes such as petroleum and chemical industry improved and improved due to the use of newly developed platinum catalysts, which simplifies the process and improves economic benefits, Therefore, platinum catalysts still have great development prospects.