Abstract:The second phase of technical transformation project of Wushan Copper Mine is about to complete its historical mission, and the amount of ore that can be mined underground is decreasing year by year. In order to save mineral resources, optimize the poverty and loss indicators, and improve the comprehensive utilization rate of mine resources, the sampling assignment method and grid estimation method in DIMINE software are used to predict the grade of the pre mined ore body to accurately predict the change of ore grade and arrange improvement measures in advance, so as to improve the production management level and extend the service life of the mine.