Abstract: To provide the reference for reasonable pre-concentration process for the deep ore of Au-Cu-Fe polymetallic deposit in Peru with 0.127% Cu, 0.08 g/t Au, 2.08% S and 40.56% Fe, the mineral processing pre-concentration test on the ore was studied, with a process of pre-throw—classification recovery for the shallow ore. It shows that the pre-concentration process of pre-throw—classification recovery for the shallow ore composing of dry throwing of raw ore -25 mm—fine grinding of rough concentrate by high pressure roller grinding—wet throwing of the fine grinding product by high pressure roller grinding—classification recovery of copper and iron from pre-thrown tailings has a good adaptability and pre-concentration effect for the deep ore, the concentrate with Cu grade 0.13%, Fe grade 48.76%, Cu recovery rate of 87.49% and Fe recovery rate of 97.93% can be obtained, and the tailings discarding yield can reach 18.84%. The research results provide the reference for the selection of the reasonable pre-concentration process for the ore, and have created a good prerequisite for improving the grade of beneficiation in the follow-up grinding and flotation operation, reducing the grinding amount of ore and the cost of mineral processing and comprehensively recovering the associated valuable metals such as iron and copper in the ore.