The　production　and　sales　of　electric　vehicle　lithium-ion　batteries　(EV　LIB)　have　experienced　rapid　growth　in　the　past　decade,　resulting　in　an　extensive　and　intricate　supply　chain　network　(SCN).　The　SCNs　orchestrated　by　different　focal　firms　are　interdependent　due　to　the　joint　suppliers　and　customers.　This　interdependence,　coupled　with　geographical　segmentation,　introduces　vulnerability　to　the　global　EV　LIB　SCN.　Focal　firms　need　management　insights　from　the　multiplexity　of　the　global　EV　LIB　SCN　to　address　the　potential　vulnerability.　This　investigation　utilizes　the　empirical　data　regarding　the　supplier–buyer　relationships　of　the　top　six　EV　LIB　manufacturers　in　2020　to　construct　the　multilayered　EV　LIB　SCN.　Then,　a　focal　firm-specific　analysis　is　conducted　to　explore　the　multiplexity　of　the　global　EV　LIB　SCN,　including　identifying　the　influential　firms,　measuring　the　structure　of　SCNs　led　by　different　focal　firms,　and　distinguishing　the　dependence　and　discrepancies　of　different　focal　firms’　SCNs.　Furthermore,　an　SCN　vulnerability　(SCNV)　index　was　designed　to　assess　the　vulnerability　of　such　a　multilayered　SCN　in　two　disruption　scenarios,　i.e.,　single-country　blockade　and　intercountry　blockade.　The　structural　analysis　can　assist　focal　firms　in　allocating　vulnerability-coping　resources　more　effectively.　Besides,　the　assessment　of　SCNV　can　assist　managers　in　identifying　potential　risk　sources　beyond　their　own　SCNs.　IEEE