From a methodological perspective, this paper uses industryclassified energy consumption data to improve the inputoutput table, and compiles China’s “carbon emission” inputoutput table. Meanwhile series of directly and completely carbon emission factors are designed from the perspective of production and consumption, and the carbon emission factor of China’s 43 national economic sectors are calculated and the correlation effects of these sectors’ carbon emissions is analyzed. Results show that whether in the view of production or final consumption, in China, the electricity and heat production and supply sectors are the highest in carbon emission factor, and dominate in national carbon emissions system.