By using the calculation methods of IPCC，the carbon emissions，carbon emissions intensity and Per capita carbon emissions of 2007~2012 in Hunan province have been calculated, as well as the carbon emissions characteristics based on energy consumption structure and industry structure are analyzed. The study showed an ontcome as follows：firstly, the energy efficiency of Hunan is gradually increasing；Secondly, optimization of energy consumption structure is the main reason for the decline in carbon intensity；Thirdly, carbon emissions are mainly in the secondary industry,especially in the high consumption energy. In the aspect of carbon emissions relative intensity, the secondary industry is more than tertiary industry, and tertiary industry is more than primary industry.