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The Guanting reservoir watershed region contains both Beijing and Zhangjiakou,its ecosystem quality state determines the well-being of people who lived in their region,it has long been concerned of all sectors of society.Therefore,the research of this regions ecosystem service value is very significant.This article put the Guanting reservoir watershed region as the research object,and analyzed statistically the current situation of land use in 2000,2005 and 2010 of Beijing and Zhangjiakou by using the ArcGIS platform.