Abstract: High purity ammonium cerium nitrate (CAN) is extensively applied in electronic and chemical industries.But the pollution is serious and the quality is low in CAN production process in China.For improving the purity of product and reducing the pollution in production process,starting from the industrial technology  aspect of CAN production,a manufacture method of analytic grade ammonium cerium nitrate was obtained by using special technical skills.The production process is environment-friendly.The products cerium dioxide mass fraction in total rare earth oxides was larger than 99.99% and turbidity was smaller than 0.8 NTU,which can meet the international market needs. 