This　paper　presents　a　treatment　process　for　copper　smelter　dust＇s　chlorinated　leaching　solution.　Addressing　the　challenge　of　separating　As　and　valuable　metals　from　this　solution,　the　process　utilized　SO2　to　reduce　As(V)　to　As(III)　and　NaOH　to　neutralize　Bi(III),　resulting　in　the　stepwise　formation　of　As2O3　and　BiOCl.　The　results　indicate　that,　under　optimal　conditions,　the　precipitation　ratio　of　As　reached　71.23%,　and　the　Bi　precipitation　ratio　reached　98.38%.　Following　Bi　precipitation,　two　separation　strategies　were　attempted　for　the　recovery　of　Cu　and　Zn.　The　first　strategy　involves　recovery　of　Cu　using　a　sulfide　precipitation　method,　followed　by　the　recrystallization　of　ZnSO4.　Under　optimal　conditions,　the　Cu　precipitation　ratio　can　reach　99.81%.　The　second　strategy　involves　Cu　solvent　extraction　using　Lix984N　coupled　with　Zn　solvent　extraction　using　P204.　Under　appropriate　conditions,　the　Cu　extraction　rate　can　achieve　98.59%.　A　comprehensive　assessment　indicates　that　using　sulfidation　-　crystallization　to　separate　Cu　and　Zn　is　more　economical　than　employing　solvent　extraction　methods.　Consequently,　the　final　process　is　determined　as　follows:　As　removal　by　SO2　reduction　＞　Bi　recovery　by　NaOH　neutralization　＞　Cu　recovery　by　sulfidation　precipitation　＞　Zn　recovery　by　crystallization.