In order to efficiently extract the ore body released by the temporary security pillars re-delineated by Copper Sanxin Gold,taking into account the stope parameters,mining sequence,safety and stability,three mining methods are preliminarily selected:panel sublevel mining staged filling mining method,panel sublevel mining sublevel filling mining method and panel mechanized upward slicing filling mining method.After a comprehensive comparison of the production capacity,safety and economic factors of the three technical schemes,it is determined that the panel sublevel mining staged filling method is the optimal scheme that has the advantages of mature technology,low cost while safety can be guaranteed.The industrial test shows that the panel sublevel mining staged filling method can recover and release the ores from temporary security pillars with safety,high efficiency and low dilution and loss,and the stope production capacity can reach 200-300 t/d.