Cyanide　Tailings　(CTs)　are　known　as　hazardous　resources　that　accumulate　hundreds　of　millions　of　tons,　threatening　the　ecological　environment.　This　work　proposes　an　eco-friendly　and　efficient　way　to　recover　gold,　iron,　and　silicon　from　CTs.　By　controlling　the　reduction　atmosphere　and　temperature　in　the　reduction　roasting　process,　＞99%　of　cyanide　could　be　selectively　removed,　and　65.3%　of　the　encapsulated　gold　in　iron　oxide　and　sulfide　could　also　be　released.　The　reduction　of　particle　size　by　mechanical　activation　liberated　92.3%　of　gold　encapsulated　in　silicate　and　iron　oxide　minerals　which　increased　the　extraction　efficiency　of　gold　in　non-cyanide　leaching　process　to　94.5%.　The　grade　and　recovery　of　iron　concentrate　obtained　from　the　magnetic　separation　reached　60.9%　and　74.6%,　respectively,　by　regulating　the　magnetic　field　intensity　of　70　kA/m.　While　the　iron　concentrate　could　be　directly　traded,　the　tailings　of　Si　grade　28.4%　(w/w)　could　be　used　in　building　materials.　The　proposed　technology　can　realize　the　harmless　resource　utilization　of　the　hazardous　CTs　with　the　potential　for　promising　industrial　applications.