Abstract: Through field investigation on a west-east rock geochemical section and a southern Cuonadong geochemical section in Zaxikang Metallogenetic Area，the variation of main ore-forming elements in mining area，strata and rock mass is studied.It is indicated that contents of Ag，Au，W gradually decrease from mining area to the sides; contents of Pb and Zn lie in the background as a whole，and both show high abnormal value in the scope of selected area.Contents of Sb decrease from west to east.According to the R cluster analysis results，abnormal distribution of the element has a certain instruction function to find the source of metallogenic material.Pb and Zn in surface strata have less relationship with metallogenesis; Au，Ag and W maybe come from the deep materials，and W may have some relationship with the southern Cuonadong granite; Sb may come from the supplement of western materials.Strong materials exchange process happens at contact zone of granite rock mass and surrounding rock in Cuonadong，and the rock mass providing metallogenic material is relatively high in possibility.

Key words: Element content, Anomaly distribution, Zaxikang deposit