This　research　solves　a　dual-channel　green　supply　chain　management　problem　encountered　under　an　eco-label　policy.　The　government　sets　a　green　standard　for　the　manufacturer.　The　manufacturer　can　only　obtain　an　eco-label　and　subsidy　from　the　government　if　the　product　satisfies　the　standard.　In　this　paper,　we　propose　a　two-part　tariff　contract　for　supply　chain　members　and　compare　it　to　other　normal　conditions.　The　contract　allows　supply　chain　members　to　make　suitable　decisions　to　obtain　more　profits　while　greening　the　supply　chain.　The　present　work　also　reveals　the　impact　of　the　eco-label　policy　on　the　economic　and　environmental　performance　of　the　supply　chain.　The　results　can　guide　governments　in　making　the　best　use　of　environmental　regulations.　©　2020　Elsevier　Ltd