The coal samples in the No.15 coal seam drilling in the southeast of Changzhi basin were ana- lyzed with the methods of maceral analysis, proximate analysis and the analysis of the microelement. The results show that there is close relation between the thorium and aluminum hydroxide, which were found mainly in the aluminum hydroxides; the contents of gallium and uranium were relatively high and chiefly associated with the clay minerals. The silica and alumina agree with each other significantly, which are the major parts of the clay minerals and the main components of ash as well. The iron oxide and the fluorine are negative correlated.