This document applies to cerium ammonium nitrate produced through chemical synthesis, concentration and crystallization using cerium carbonate or cerium nitrate, hydrogen peroxide, nitric acid, ammonia, and ammonium nitrate as the main raw materials. It is mainly used as catalysts for automobile exhaust gas treatment, catalysts for organic volatile gas treatment, oxidants and catalysts for organic synthesis, etchants in the field of electronic technology, high-end polishing powder and other products.