The characteristic of this method is that the powder sample which has been brought about into a linear spread by an oscillating device is injected into tho plasma from a glass tubejet. The powder sample used must be initially ground to less than 14µ and fully photographed by exposing for 25 seconds. It is able to eliminate the substrate interference and pollution by mixing the powder sample with a certain amount internal standards and buffer. The powder sample used for each photograph is only 3.3 mg. The method has been employed in the simultaneous deterurination of Zr, Ba, Sr, La, Y, Nb, Be, Ti, V, Co, Cr, Ni, Cu, Pb and B. The detection limit and tho deterraination accuracy of each element can all satisfy the needs of the determination of trace elements.