Abstract: In order to solve the problem of high-efficient mining in Qianjiaping unstable ore rock conditions,combining with the technical conditions of mining and mining production status,considering the main influence factors of mining method,stope structure parameters being suitable for the mine are obtained by FLAC^3D numerical simulation and analytic hierarchy process(AHP).The results indicate that stope stability is best when studding width is 10m,thickness of support basal pillar and basal pillar is 6m,mining level height is 50m,and ore block length is 50m.