The　purpose　of　this　study　is　to　determine　the　life　cycle　CO2　emissions　for　the　production　and　distribution　of　energy　carriers　in　China.　The　mathematical　method　of　input-output　analysis　was　used　to　model　the　complicated　materials　flows　between　different　energy　industries.　The　results　show　that,　for　providing　1　GJ　fuels,　coking　products　have　the　largest　CO2　emission,　followed　by　oil　products,　middling　coal,　cleaned　coal,　natural　gas　and　crude　oil,　and　raw　coal.　The　results　also　show　that　the　theory　and　mathematical　model　of　input-output　analysis　are　more　proper　for　energy　carriers　than　traditional　inventory　calculation　models.　The　comparison　between　China　and　Japan　indicates　that　the　life　cycle　CO2　emissions　of　energy　carriers　produced　in　China　are　higher　than　developed　level;　therefore　there　is　CO2　mitigation　potential　for　China＇s　energy　industries.