The method of improved analysis of ecological footprints is applied to study the current ecological environment of Guangzhou City. The results show that the ecological environment of Guangzhou City from the year 2002 to 2007 is unsustainable. The ecological deficit is increased year by year. 78.8% of the ecological footprint came from fossil fuel, indicating that the high speed development of economic and rapid increase of the vehicles which pushed the huge demand of fuel. The press of ecological environment from the economic development mainly come from the demand of resource and fuel.