Abstract: Mineral resource and reserve estimation is generally carried out in a specific grade domain,and the essential issues are to determine which known data should be used to estimate unknown points.When fixing the extreme value of sample data,the traditional method takes too much consideration of the economics of the deposit and neglects its geological and statistical characteristics.Based on the exploration data analysis,this paper introduces fractal analysis,boundary analysis and variogram analysis to determine the estimated grade domain and related parameters of mineral resource and reserve estimation.Case study shows that the improved IDW estimation flowsheet has deepened the relationship among the geological characteristics,grade statistical features and economic properties of the sample data.Furthermore,the integration of different techniques and methods provides new ideas for the traditional mineral resource and reserve estimation.