Abstract:with the rapid development of pyrometallurgical copper industry, a large amount of copper slag is accumulated, which does great harm to biology or environment. Copper slag contains a large number of recyclable valuable metals. Comprehensive recovery of valuable metals in copper slag and resource utilization of residual slag can not only reduce environmental pollution, but also produce high value-added products. Wet leaching of copper residue has attracted extensive attention because of its advantages of environmental protection, economy and high efficiency. In this paper, the latest research progress of wet leaching of copper slag is reviewed in detail from four aspects: acid leaching, chlorination leaching, alkaline ammonia leaching and biological leaching. The basic principles, advantages and disadvantages of the four methods are compared and analyzed, the current situation of resource-based and efficient utilization of leaching slag in various leaching methods is summarized, and the resource-based and efficient recovery of copper slag in the future is prospected