This　paper　adopted　the　undesired　output　SBM　model　to　measure　and　evaluate　the　municipal　solid　waste　carbon　emission　efficiency　in　30　provinces　of　China　from　2005　to　2020.　With　the　help　of　the　social　network　analysis　method　(SNA)　and　the　quadratic　assignment　procedure　(QAP),　the　structural　characteristics　and　influencing　factors　of　the　spatial　correlation　network　of　municipal　solid　waste　carbon　emission　efficiency　in　China　were　discussed.　The　results　showed　that:　Except　Beijing,　Inner　Mongolia,　Shanghai,　Jiangsu　and　Fujian,　the　average　of　municipal　solid　waste　carbon　emission　efficiency　in　other　provinces　was　less　than　1,　and　the　provinces　with　higher　efficiency　were　mainly　located　in　eastern　region.　The　tightness　of　the　spatial　correlation　network　of　municipal　solid　waste　carbon　emission　efficiency　in　China　had　improved　in　fluctuation,　but　there　was　still　room　for　improvement.　The　network　structure　showed　good　accessibility　and　stability.　The　eastern　provinces　were　in　the　relative　center　of　the　spatial　network,　and　played　a　strong　leading　role　in　the　spatial　network,　while　the　central　and　western　provinces　were　at　the　edge,　and　played　an　intermediary　and　transmission　role.　The　spatial　correlation　network　of　municipal　solid　waste　carbon　emission　efficiency　was　divided　into　net　spillover,　net　benefit,　and　broker　segments.　There　were　few　internal　connections　among　each　segment,　and　close　connections　between　segments,with　strong　spatial　spillover　effects.　Spatial　adjacency　difference,economic　development　level　difference,　scientific　and　technological　level　difference,　and　municipal　solid　waste　treatment　structure　difference　had　a　significant　impact　on　the　formation　of　municipal　solid　waste　carbon　emission　efficiency　correlation　network　in　China.　©　2023　Chinese　Society　for　Environmental　Sciences.　All　rights　reserved.