The recovery and utilization of valuable metals in zinc smelting slag are of great significance to the sustainable development of the metallurgical industry.In this study,a wet step leaching process,including acid leaching-alkaline leaching-cyanidation leaching,was used to recover zinc,lead,gold and silver with high contents of the above metals.The experimental results showed that under the conditions of sulfuric acid mass fraction of 20 %,liquid-solid ratio of 2∶1,leaching temperature of 80 ℃,and leaching time of 2 h,the zinc leach-ing rate was 90.31 %;under the conditions of sodium hydroxide mass fraction of 10 %,liquid-solid ratio of 2∶1,leach-ing temperature of 80 ℃,and leach-ing time of 2 h,the lead leaching rate was 93.37 %;under the conditions of sodium cyanide mass fraction of 0.20 %,liquid-solid ratio of 2∶1,and leaching time of 16 h,the gold and silver leaching rates were 82.61 % and 92.39 %,respectively.The wet step leaching process realized the comprehensive recovery of the zinc smelting slag.