The　resource　utilization　of　cyanide　tailings　has　significant　environmental　and　economic　benefits.　The　efficient　recovery　of　gold　from　low-grade　cyanide　tailings　containing　1.71　g/t　Au　was　performed　by　a　chlorination　roasting–flotation　process.　The　effects　of　roasting　temperature,　calcium　chloride,　internal　coke,　external　coke,　copper　sulfide　concentrate,　and　kaolin　on　the　recovery　rate　of　concentrate,　gold　grade,　and　sorting　efficiency　were　investigated.　The　optimized　process　parameters　were　as　follows:　16　wt%　calcium　chloride　dihydrate,　6　wt%　internal　carbon,　1　wt%　external　carbon,　9　wt%　copper　sulfide　concentrate,　2　wt%　kaolin,　and　roasting　temperature　of　730　°C.　The　sorting　rate,　gold　grade,　and　recovery　rate　of　gold　concentrate　can　reach　88.48%,　33.46　g/t,　and　76.7%,　respectively,　and　the　gold　grade　of　tailings　was　as　low　as　0.17　g/t.　In　the　matte　phase,　gold　can　be　enriched　in　the　form　of　gold　grains.　Therefore,　through　chlorination　roasting,　the　trapped　gold　can　be　released　and　deposited　on　the　surface　of　the　matte　phase　due　to　the　transformation　from　hematite　to　magnetite.　The　gold-deposited　metal　sulfide　can　be　effectively　recycled　through　flotation.　These　results　have　potential　guiding　significance　for　the　efficient　recovery　of　gold　from　cyanide　tailings.　©　2023　by　the　authors.