Based on the carbon emission measurement method provided by the United Nations Intergovernmental Panel on Climate Change, the characteristics of changes in carbon emission intensity and spatial distribution patterns at the national and regional scales from 2010 to 2019 were studied. The results indicate that: ①The carbon emissions of four energy sources natural-gas, paraffin, gasoline and crude oil have been increasing year by year; the carbon emissions of diesel fuel have been increasing and then remain stable; the carbon emissions of fuel oil have been increasing and then decrease; for the carbon emissions of coke and coal, it presents a "N-shaped" model. ②Carbon emissions have been rising nationwide, generally showing three stages of breakneck growth, relatively flat growth and rapid growth. However, as the rate of economic growth exceeds the growth rate of carbon emissions, the intensity of carbon emissions shows a decreasing trend. ③The overall carbon emission intensity of the seven regions shows a downward trend, with the spatial distribution pattern of "high in the east and low in the west, high in the north and low in the south".