The　environmental　deterioration　caused　by　carbon　emissions　has　enhanced　people＇s　awareness　of　environmental　protection.　Governments,　businesses　and　consumers　are　expected　to　reduce　carbon　emissions　while　ensuring　their　daily　activities.　Therefore,　based　on　the　background　of　carbon　emission　reduction,　this　paper　explores　the　impact　of　different　low-carbon　subsidy　methods　of　government　on　supply　chain　decision-making.　Through　analysis　and　solutions,　the　main　research　conclusions　are　as　follows:　the　government＇s　subsidy　model　will　not　affect　the　retailer＇s　low-carbon　publicity　level　and　the　manufacturer＇s　cost-sharing　rate.　However,　the　government　subsidy　coefficient　will　affect　the　carbon　emission　reduction　level,　carbon　emission　reduction　yield,　low-carbon　goodwill,　the　manufacturer＇s　profit　and　the　retailer＇s　profit.　If　the　manufacturer　and　the　retailer　aim　only　to　maximize　profits,　the　government　subsidies　based　on　carbon　emission　reduction　yield　will　not　be　the　optimal　choice,　which　is　mainly　because　the　government　only　considers　carbon　emission　reduction　yield　and　not　carbon　emission　reduction　cost.　On　the　contrary,　if　both　take　into　account　carbon　emission　reduction,　the　government　subsidy　to　consumers　will　not　be　the　optimal　choice.　Finally,　according　to　the　analysis　and　discussion,　we　can　get　some　management　enlightenment　and　suggestions.