This　paper,　taking　Fuzhou　urban　area　as　an　example　studied　the　urban　ET　variations　and　its　relationship　with　urban　build-up　land　and　vegetation　using　two　Landsat　images　of　2003　and　2013.　The　result　reveals　that　the　ET　has　been　sharply　decreased　by　30.62%　in　urban　areas.　The　regression　analysis　shows　that　ET　has　a　strong　negative　linear　correlation　with　urban　build-up　land　and　an　obvious　positive　linear　correlation　with　vegetation.　Apparently,　urban　expansion,　build-up　land　increase　and　vegetation　reduction　are　the　key　factors　contributing　to　the　decreasing　of　ET　in　urban　areas.　©　2016,　Science　Press.　All　right　reserved.