Abstract: Through the study and analysis on productive prospecting net dimension in different section of Gaocun and Yunxi deposits, it points out the orebody forming more complicated than the continuous section.Densification of the productive prospecting net demension makes for further finding out the being state of orebody, reasonable allocation of development engineering, organic incorporation of prospecting and development engineering, lessening waste of engineering.Whereby, it can degrade the mine myriaton excavation ratio and realize the maximize of productive benefits.