Abstract: Adding the alcoholic solution of the organic bases directly into the alcoholic solution of hexachloroceric acid and leading dry HCl into the mixture, three new snlts of hexachloroceric acid, 2, 6-dimethyl-r-pyrone oxonium hexachlorocerate,imida-zolium hexachlorocerate, pyrrolidinium hexachlorocerate, were prepared. By elementary analysis method, the formulas of these compounds were determined as follows. (C₇H₈O₂H)₂CeCl₆, (C₃H₄N₂H)₂CeCl₆ and (C₄H₉NH)₄CeCl₈. The physical and chemical properties of these new compounds were studied with IR, UV, X-ray diffraction, differential thermal analysis, thermogravity and conductivity method.