Energy　supply　bases　(ESBs)　are　vital　regions,　intended　to　satisfy　global　energy　demands　and　secure　global　energy　supplies,　which　provide　large　amounts　of　energy　products　to　their　host　countries　(and　even　the　world　through　trade).　However,　due　to　long-term　dependency　on　energy　trade,　ESBs　are　facing　the　dual　pressure　of　reaching　emission　reduction　targets　and　securing　energy　supplies　and　have　become　one　of　the　main　obstacles　for　host　countries　trying　to　reach　emission　reduction　targets.　(1)　Methods:　We　used　the　EEBT　model,　SDA　model,　and　CR　model　to　explore　the　spatio-temporal　features　and　mechanisms　of　embodied　carbon　emissions　in　inter-provincial　trade　(ECEs-PT)　in　Shanxi.　(2)　Results:　The　spatio-temporal　development　characteristic　of　net　ECEs-PT　outflow　in　Shanxi　is　＂from　expanded　coverage　to　enhanced　agglomeration＂.　A　total　of　98%　of　the　net　ECEs-PT　is　highly　concentrated　in　coal　mining　and　washing　(Coalmin),　metal　smelting　and　rolling　processing　(MetalSmelt)　and　petroleum　processing,　coking,　and　nuclear　fuel　processing　(RefPetraol).　Moreover,　the　ECEs-PT　driving　forces　were　technology,　structure,　and　scale.　While　trade　expands,　the　pressure　of　CEs　reduction　is　increasing.　We　discussed　optimization　for　different　types　of　sectors.　The　results　could　provide　scientific　support　for　similar　ESBs　to　reduce　carbon　emissions　more　efficiently　with　less　disturbance　to　energy　supply　stability.