A uew simple paper-chromatography for the colorimetric determination of micro amount of gold with thio-Michlers ketone(TMKI in ores has been studi- ed. The sample solution in hydrochloric acid medium was introduced on chro- matographic paper. The developing medium was alcohol-acetic acid-water solu- tion and ascending process was applied. The chromatogram was developed with 0.3% TMK of ethyl alcohol solution. The Rf value of gold was found to be 0 .99, the other elements such as Cu, Ni,Co, Se, As, Ag, Mo and Te were less than 0.82. The mekhod could be applied to the determination of 0.OOx-O.x g/T gold an ores.