Abstract: By using China’s input-output tables of 42-sectors in the years 2002 and 2007, this paper has compiled two 8-sectors input-output tables, which include energy sector, non-energy sector, venous industry, agriculture, architecture, transportation and telecommunication industry, business and catering industry, and non-physical sector. Making use of the four input-output tables, it has calculated the influence coefficient, sensitivity coefficient, direct consumption coefficient, complete consumption coefficient of energy sector, and the energy sector’s direct and complete Spread effect on the other industries in the national economy. Based on these data this paper has discussed the present energy conservation and emission reduction polices of China. What’s more, this paper has proposed some suggestions to deepen the energy conservation and emission reduction work according to Chinese energy using structure and industry characteristics.