Nine samples of oX-gallstong have been studied by scanning electron microscope and energy dispersive X-ray spectrometer. The determinative results indicated that calculus of Bos faurus domesticus Gmelin contained ten trace elements (Na, K, Ca, Mg, Zn, Fe, Cu,P, Cl,S), calculus of B.grunniens L. contained eight trace elements (Na, K, Ca, Fe, Cu,Ce, Cl, S), cultivate calculus of B. grunniens L. contained ten trace elements (Na, K ,Ca, Mg, Fe, Cu, P, Nd, Cl, S).Three species calculus all contained seven trace elements (Na, K, Ca, Fe, Cu, Cl, S), and the differences of their coontent were no significant.