This article takes Jiangsu Province as an example, using the consumption from 2000 to 2009 and its social and economic statistical data to analyze the change rule of the energy consumption carbon footprint; with the trend correlation method to study the affecting factors of the energy consumption carbon footprint, and uses the decoupling index method to study the relationship between energy consumption carbon footprint and economic development. The conclusions show that the average growth rate of energy consumption carbon footprint from 2000-2009 is 13.6%. On the whole, before 2005, the main part of Jiangsu Province energy consumption carbon footprint is coal, and coal was in a more dominant position, the second was oil, natural gas at least, but after 2005, natural gas was in the dominant position, the second was coal, oil at least. Among the factors that affect energy consumption carbon footprint, economic growth is the most important. Economic growth is energy-based, and the former and the latter show a relative decoupling and re-hook fluctuations in the state.