On the basis of 1∶50000 stream sediment survey，the geochemical characteristics of the arctic-alpine zone in Heku area were tentatively analyzed. The distribution of the elements，the elements relation in single anomaly and the features of the anomaly were also studied. The result shows that the method of geochemical stream sediment survey is obviously effective in the area of complicated topography，as evidenced by the successful delineation of two Pb-Zn-Cd-V ore-forming places.