Abstract: It is one of the stratigraphical methods using the geochemical differences in strata for stratigraphic division.In the present paper,the Palaeozoic strata in the Wenduhala region, Xinjiang are chemostratigraphically divided based on the systematic data of spectral semiquantitative analysis obtained from the regional geological survey by means of the optimal partitioning method and the half moving window method for the ordered sample analysis. The results of the chemostratigraphic division are comparable with those of the lithostratigraphic division based on the macrolithologic characteristics.