According to the mining conditions of Sandaozhuang Mine which belongs to Luoyang Luanchuan Molybdenum Group Co. Ltd,the forming cause of the mine-out areas,and their influences on the safety in production and the resource conservation are analyzed in this paper. The emphasis is laid on presenting technological innovations in mined-out area treatment. The practices have proved that the innovative technologies are effective for disposing of mined-out areas and can ensure safety in mining production.