Abstract: The variation function as the core content and basic analyse method of geostatistics,it can well research the basic characteristics of the regionalized varibles of a deposit.Especially,it can preferably reflect the randomicity change and spatial changeability of the variables.Through the introduction of regionalized variables and the variation function theory,the practical data of certain metal has been explained in this paper,based on the DIMINE software.While the experiment variogram calculation and theory variogram combination of the Damingcao copper has been showed.The variogram model indicates the mineral characteristics and the spatial changeability of orebody.The research may provide a significant basis for reserves calculation,exploration and rational exploration of mineral resources.