Abstract: The minute varying mthod which counts theoretical corrective coefficients in x-ay fluorescence analysis is successful. After computing fundamental theoretical corrective coefficients δ_ij, may select proper eliminating terms according to the need, In this paper, the use of the program which is writen by author, computed fundamental theoretical corrective coefficients for glass bead samples, and eliminated two corrective terms of base element and analytical element. The interelement corrective coefficients α_ij and interoxide Aij were obtained. Finally the better analytical results for 6 kinds of ore samples were obtained by applying theoretical corrective coefficients and using JIS model in refference standard method.