With　the　increasing　seriousness　of　climate　change　problem,　carbon　footprint　has　become　a　very　useful　method　to　measure　carbon　emissions　and　has　been　widely　accepted.　In　modern　industry,　electricity　is　almost　consumed　in　all　industry　processes,　and　electricity　is　the　first　＂footprint＂　of　most　products.　As　carbon　emissions　is　always　measured　by　theoretical　estimation　from　input　inventory　but　not　experimental　data,　the　input　inventory　of　electricity　generation　becomes　very　important　in　carbon　footprint　analysis.　Electricity　generation　is　a　very　complex　process,　where　all　input　items　inter-dependant　on　each　other　and　the　whole　system　is　an　infinite　cycle　net.　But　in　the　traditional　calculation　model　of　input　inventory,　the　interaction　effect　of　production　system　is　usually　neglected.　The　major　work　of　this　study　is　to　make　clear　the　carbon　emissions　of　provision　1kWh　thermal　power　generation　to　consumers　in　China　in　2006,　since　thermal　power　generation　takes　the　most　proportion　of　Chinese　electricity.　This　study　used　a　matrix-based　model　which　includes　interaction　effect　of　the　system　to　calculate　the　input　inventory　of　electricity　generation,　and　then　the　carbon　emissions　of　thermal　electricity　generation　in　China　in　2006　can　be　calculated.　The　final　result　of　this　paper　can　be　used　in　carbon　footprint,　Life　Cycle　Assessment　or　some　other　related　fields.