Abstract: Gold and silver are extracted from a complex gold  concentrate by direct cyanidation.Cyanide residue is exported to sulphuric acid plant,but basically the gold,copper and lead are not valued,causing the loss of valuable metals.The processes of bulk flotation of cyanide residue,copper-sulfur separation flotation,and copper-lead separation flotation were used in the test,producing sulfur concentrate,copper concentrate and lead concentrate,the recovery rate of sulfur is 89.49 %,copper 85.18 %,lead 65.10 %,and the total recovery rate of gold is 73.28 %,realizing efficient comprehensive recovery of valuable elements from cyanide residue and achieving outstanding economic and social benefits.