This paper contains an inventory of greenhouse emissions from energy-consuming activities in Jiangsu Province in 1990, following the conventions set in IPCC Guidelines (1995). The inventory data are further analyzed and evaluated The CO2 emissions from energy consumption activities are: 53.7% from the sector of industries; 28.4% from the sector of energy production and transformation; 3.0% from transportation; 13.8% from small combustion, and 1.0% from others.