In order to maintain the stability of rock mass,create working conditions for sublevel top pillar extraction,and improve the recovery rate of resources,Shihu Gold Mine adopted high-strength rib plate artificial false bottom to substitute the orebodies to construct bottom structures in the parallel medium-long hole sublevel filling stope.Through theoretical analysis,the paper determined the feasibility of artificial false bottom,and put forward the construction scheme of rib plate artificial false bottom construction.The field application shows that artificial false bottom construction at the bottom of each stope meets the goal to safely and efficiently mine the orebodies,lowers the mining loss rate to 3.52 % and the ore dilution rate to 5.36 %.Without sill pillars,each ore block can create 5.26 million yuan more profits on average.