In　this　study,　we　present　the　evaluation　of　urban　land　carrying　capacity　(ULCC)　based　on　an　ecological　sensitivity　analysis.　Remote　sensing　data　and　geographic　information　system　(GIS)　technology　are　employed　to　analyze　topographic　conditions,　land-use　types,　the　intensity　of　urban　development,　and　ecological　environmental　sensitivity　to　create　reasonable　evaluation　indicators　to　analyze　urban　land　carrying　capacity　based　on　ecological　sensitivity　in　the　rapidly　developing　megacity　of　Hangzhou,　China.　In　the　study,　ecological　sensitivity　is　grouped　into　four　levels:　non-sensitive,　lightly　sensitive,　moderately　sensitive,　and　highly　sensitive.　The　results　show　that　the　ecological　sensitivity　increases　progressively　from　the　center　to　the　periphery.　The　results　also　show　that　ULCC　is　determined　by　ecologically　sensitive　levels　and　that　the　ULCC　is　categorized　into　four　levels.　Even　though　it　is　limited　by　the　four　levels,　the　ULCC　still　has　a　large　margin　if　compared　with　the　current　population　numbers.　The　study　suggests　that　the　urban　ecological　environment　will　continue　to　sustain　the　current　population　size　in　the　short-term　future.　However,　it　is　necessary　to　focus　on　the　protection　of　distinctive　natural　landscapes　so　that　decision　makers　can　adjust　measures　for　ecological　conditions　to　carry　out　the　sustainable　development　of　populations,　natural　resources,　and　the　environment　in　megacities　like　Hangzhou,　China.