A　significant　technique　of　combining　simulation　experiments　with　a　long-term　real-time　field　measurement　was　first　deployed　to　explore　impacts　of　various　environmental　factors　on　formations　of　sulfate　aerosol　on　the　surface　of　mineral　aerosols　as　MgO　in　the　different　reaction　systems,　and　synergistic　impacts　of　these　environmental　factors　on　the　formation　of　sulfate　aerosols　in　the　different　seasonal　systems,　especially　in　haze　days.　Meanwhile,　a　new　correction　technique　was　developed　to　estimate　the　effective　reaction　area　and　initial　uptake　coefficient　of　SO2　on　the　MgO　aerosol　surfaces.　The　significant　results　showed　that　the　reactions　of　SO2　on　the　MgO　aerosol　surfaces　in　the　system　of　SO2-MgO-dark　could　produce　a　small　amount　of　sulfate　and　a　large　amount　of　sulfite　and　bisulfite,　while　in　the　systems　of　SO2-MgO-h?　and　SO2-MgO-O3　produce　a　large　amount　of　sulfate　and　a　small　amount　of　sulfite　and　bisulfite.　The　impacts　of　temperature　T　and　relative　humidity　RH　on　the　sulfate　formation　on　MgO　aerosol　surfaces　showed　a　single-peak　mode　under　the　UV　light　condition,　respectively.　The　sensitivities　of　these　environmental　factors　to　the　sulfate　aerosol　formation　were　found　to　follow　the　order　of　RH　＞　UV　＞T　＞　O3　＞　SO2.　The　revised　initial　uptake　coefficient　?0.REV　of　SO2　on　the　MgO　aerosols　was　always　between　?0.BET　and　?0.GEO,　and　much　closer　to　actual　value.　The　heterogeneous　reaction　mechanisms　of　SO2　on　the　MgO　aerosol　surfaces　in　the　different　reaction　systems　were　obviously　different.　In　the　presence　of　water,　light　irradiation　and　O3　exerted　crucially　significant　roles　in　promoting　sulfate　heterogeneous　formation.　The　various　environmental　factors　in　the　different　seasonal　systems,　especially　in　haze　days,　showed　different　synergistic　effects　on　sulfate　aerosol　formations.　The　sulfate　aerosol　formations　in　haze　days　were　mostly　impacted　by　RH,　T,　O3,　and　SO2　in　spring,　RH　in　summer,　RH,　T,　and　SO2　in　autumn,　and　RH　and　SO2　in　winter.　The　study　will　provide　significant　scientific　bases　for　understanding　and　controlling　haze　pollution　formation.