Abstract: A pyritic slag is sold directly as iron concentrates. The gold， silver， copper， and zinc are not recovered， which is a loss of valuable metal resources. The experiment uses a three-stage process (first-stage acid leaching for copper and zinc removal， second-stage copper and zinc precipitation by sulfurization， and third-stage environmentally friendly leaching of gold and silver) for treatment， and optimizes the test conditions. Under optimal conditions， the copper and zinc in pyritic slag， after acid leaching-precipitation， have comprehensive recovery rates of 70.08 % and 67.66 % respectively； good indexes that gold and silver leaching rates are 54.17 % and 56.52 % respectively are obtained when the acid leaching slag is neutralized to pH 9~10 with sodium hydroxide， the liquid-solid ratio is 2：1， the environmentally friendly gold leaching reagent BK516 dosage is 0.09 %， the leaching time is 18 h. The process solves technical challenges to comprehensively recover and utilize valuable metals in pyritic slag and creates good economic and environmental profits.