Data　Envelopment　Analysis　(DEA)　and　weighted　grey　correlation　have　been　combined　to　establish　an　evaluation　system　from　the　perspective　of　input　and　output　for　the　coordination　of　urban　ecosystem.　Data　of　Beijing　between　2003　and　2010　have　been　adopted　to　evaluate　and　catalogue　various　styles　of　urban　ecosystem　in　Beijing.　The　developing　trends　and　existing　problems　of　Beijing　ecosystem　are　depicted,　with　the　result　that　Beijing　has　experienced　fluctuation　of　its　ecosystem　coordinated　index　in　the　span.　The　year　of　2007　has　witnessed　the　best　coordination　and　the　year　of　2004　the　worst,　leaving　the　lesson　that　the　constant　growth　of　power　and　water　consumption　should　be　of　primary　concern　for　a　target　of　sustainable　economic　development.　©　2013　Asian　Network　for　Scientific　Information.