Abstract: In order to mine efficiently in unstable ore-bearing rocks condition,based on the studing on the rule of ground pressure and the distribution character of mining pressure,the paper improve the way of sublevel caving without sill pillar,optimize the stope structural parameters and blasting parameters using the stress-relieve principle,put forward the high efficient mining scheme of inclined medium-thick orebody in unstable ore-bearing rocks condition,reduce the influence on the rock mass fall easily,realizes the work safety produce with high produce efficiently.