Abstract: Currently，beneficiating method is the main treatment method for resource utilization of copper slag． But there is still a mountain of tail slag having no valuable use after treatments． In the research，the copper slag was taken as a resource containing copper and iron metal，silicon oxide inorganic materials and rich in high calorific value，and the resource utilization treatment was carried out． Under molten condition，the copper cast iron was extracted from copper slag，tailing slag was used for making mineral wool，and high added value utilization of molten copper slag became true． This treatment technique of copper slag has high added value，low energy consumption，and has a certain market prospect． The development prospect of the technique of copper slag is good，which should be extended for application．