In a certain gold-copper ore flotation,which has complicated properties,the recoveries of gold and copper were low.Therefore,a high-efficiency collector was applied to the gold-copper ore flotation.The experiment results showed that while using QF as the collector the recovery of copper can be improved over 3%,and the recovery of gold can be increased over 10%.QF has a good effect on the improvement of the indexes of gold-copper ore flotation,especially on the increase of recovery of gold.