Abstract: Mining cities are very suitable for investigation of ecological sustainability, and their land use changes are also an important research content. In this study, Wu'an City in Hebei Province, a typical mining city, was selected. Based on ecological footprint and information entropy, an urban ecosystem sustainability evaluation model for Wu'an was established. Then a quadrant-based polygon method was used to analyze the specific trends of evaluation indices in Wu'an. Results show that in recent 10 years. ① Wu'an was faced with severe ecological deficit, but the ecosystem grew to the healthy and reactive state, The per capita ecological deficit increased from 8.713hm²/in 2009 to 10.322hm²/in 2005, and then decreased gradually, and was 8.847hm²/in 2013. ② The stress on the eco-environment imposed by economic growth was gradually weakened. ③ The economic and ecological costs were reduced, and the overall eco-environment grew to the sustainable state. The demand for natural ecology by urban development was analyzed by correlating the growth of a mining city with quantification of ecological status. This study provides some guidance for evaluating the mechanism and ecological sustainability of land use changes in Chinese mining cities.