Two step mining with ore block divided into stope and pillar is normally used for steep-dipping narrow veins with unstable country rock.This method results not only in more dilution and loss of ore but also in unsafty for the second stop mining.For this reason,our research set up a mining technology which got ore block mined in a step with the combination of upward slicing cemented lumpy-rock columns and dry filling,and it was proved in practice that this technology can provide with good economic and social benefits.