Low-carbon　economy　is　a　new　development　approach　that　is　generated　in　the　condition　of　the　global　climatic　change　and　energy　crises.　Developing　low-carbon　economy　and　building　low-carbon　city　are　doable　avenues　on　the　premise　of　China＇s　commitment　to　limit　greenhouse　gas　emission.　This　paper　studied　the　meaning　of　low-carbon　development,　constituted　an　overall　merit　index　system　and　evaluation　method,　investigated　an　implemental　approach　of　low-carbon,　and　proposed　policy　measures　of　developing　low-carbon　city.