This paper analyzes the content of sustainable urban land use, builds the evaluation system of sustainable urban land use from four aspects of resource-saving, environment friendly, economic development and social harmony. A grey related analysis model is used to evaluate urban land sustainable use from the two dimensions of time and space. The research shows that the level of sustainable urban land use in Hunan Province has increased annually, but there is still much room for improvement ; Changsha is the highest level of sustainable urban land use, Shaoyang is the lowest level, and the susta...