Platinum catalyst (in English) is a kind of catalyst with metallic platinum as the main active component. Platinum metal mesh, platinum black or platinum supported on alumina and other carriers may 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 from gas. It is a catalyst, which is often used in chemistry, petroleum and chemical reactions. It has the advantages of high catalytic activity, strong selectivity, convenient preparation of catalyst and low dosage, and can be compounded with other metals or active components of cocatalyst by changing and improving the manufacturing method to optimize the catalytic performance. The utility model has the advantages of wide application field, repeated regeneration and activation, long service life, and the metal palladium in the waste catalyst can be recycled. A variety of platinum catalysts have become patented products and are used in all walks of life. Platinum catalyst with new structure and catalytic function is still being developed, which not only makes it possible for many difficult reaction processes to be catalyzed by platinum catalyst, but also improves and improves many industrial production processes such as petroleum and chemical industry, simplifies the technological process and improves the economic benefits. Therefore, platinum catalysts still have broad development prospects.