This　study　extends　the　classic　RICE　model　by　introducing　energy　factors　into　the　economic　module　and　comprehensively　describes　different　types　of　energy　demands.　Taking　China　as　an　example,　we　constructed　the　RICE-China　model　and　further　explored　the　impact　of　different　cooperation　methods　on　China＇s　carbon　emissions　and　energy　demand.　The　main　results　are　as　follows.　First,　there　are　significant　differences　in　China＇s　emission　reduction　under　different　cooperation　scenarios.　In　the　Lindahl　cooperation　scenario,　China＇s　carbon　emissions　in　2100　have　reduced　by　90.5　%　to　achieve　the　two-degree　goal,　which　is　lower　than　the　utilitarian　cooperation　scenario.　Second,　the　decline　in　China＇s　fossil　energy　under　the　utilitarian　scenario　is　higher　than　that　under　the　Lindal　scenario.　Specifically,　China＇s　fossil　energy　demand　decreased　by　91.4　%　in　2100　under　the　Lindal　scenario,　with　non-fossil　energy　accounting　for　94.7　%　of　total　energy　consumption.　Third,　China＇s　emission　reduction　in　the　later　period　under　the　RICE-China　model　is　lower　than　that　of　the　RICE　model,　and　the　corresponding　GDP　loss　has　also　decreased.　Specifically,　China＇s　GDP　losses　under　the　RICE-China　model　are　approximately　1.5–2.8%　points　lower　than　those　under　the　RICE　model.　This　study　provides　new　insights　for　China　to　participate　in　international　climate　cooperation.　©　2023　Elsevier　Ltd