This　paper　uses　global　trade　data　on　lithium　battery　separators　from　2017　to　2021　to　conduct　research　using　temporal　exponential　random　graph　models　(TERGM)　to　overcome　the　limitations　of　traditional　static　network　analysis.　The　study　focuses　on　dynamic　evolution　and　driving　effects.　The　results　indicate　that　after　2018,　the　lithium　battery　separator　trade　relationship　between　China　and　the　United　States　exhibited　a　＂cooperation-decoupling-cooperation＂community　evolution　trend.　Sino-US　trade　frictions　had　a　stronger　impact　on　the　United　States＇　position　in　the　trade　network　than　in　China.　The　lithium　battery　separator　trade　network　density　was　low　and　stable　with　significant　growth　potential.　Most　countries　had　stronger　export　capabilities　than　imports,　and　there　were　＂rich　club＂effects　and　trade　protectionism　tendencies.　The　key　elements　of　battery　separator　trade　were　less　affected　by　geographical　distance.　Sino-US　trade　frictions　deepened　grade　effects,　but　the　matching　coefficient　of　countries　with　high　GDP　decreased.　The　blockade　in　the　stage　of　trade　friction　was　somewhat　eased　after　2020,　and　trade　monopoly　and　protectionism　weakened.　This　article　provides　insight　into　promoting　the　trade　layout　of　lithium　battery　＂stuck　neck＂technology　products,　facilitating　the　upgrading　of　lithium-ion　power　batteries,　promoting　the　high-quality　development　of　the　new　energy　vehicle　industry,　eliminating　trade　frictions,　and　promoting　China＇s　dominant　position　in　the　international　trade　network.　　©　2023　ACM.