China　attaches　great　importance　to　international　cooperation　on　climate　change,　especially　working　with　the　Belt　and　Road　Initiative　relevant　partners.　From　a　perspective　on　carbon　emissions　and　economic　spillover　effects,　this　study　explores　how　China　and　the　Belt　and　Road　Initiative　countries　can　work　together　to　cope　with　climate　change.　It　applies　a　three-region　spillover　effects　model,　based　on　the　multi-regional　input-output　table　and　satellite　extensions　data　of　the　Eora　database,　to　examine　mutual　carbon　emissions　and　economic　spillover　effects　between　China　and　the　Belt　and　Road　Initiative　countries.　The　results　show　that:　(1)　Mutual　carbon　emissions　spillover　effects　exist　between　China　and　the　BRI　countries,　which　is　an　important　premise　for　them　to　cooperate　responding　to　climate　change.　(2)　There　are　great　differences　in　carbon　emission　spillover　effects　among　different　sectors.　Thus,　optimizing　the　trade　structure　can　bring　benefits　to　carbon　reduction　for　both　sides.　(3)　The　sectoral　order　of　carbon　emissions　spillover　effects,　and　economic　spillover　effects,　is　not　consistent.　In　order　to　achieve　an　economic　and　environmental　win-win,　it　is　necessary　to　increase　bilateral　trade　in　those　sectors　with　large　economic　spillover　effects,　and　reduce　other　sectors　with　large　carbon　emissions　spillover　effects.