Based　on　life　cycle　assessment　(LCA),　a　quantitative　analysis　of　energy　consumption　and　greenhouse　gas　emission　caused　by　primary　aluminum　and　recycled　aluminum　in　China　in　2008　was　carried　out.　The　main　reason　for　the　gap　between　China　and　international　average　level　was　found　out　through　the　comparison.　The　results　show　that,　compared　to　the　status　of　2003,　the　energy　consumption　of　primary　aluminum　production　has　reduced　by　about　16%.　The　greenhouse　gas　emission　has　declined　by　21%　and　a　remarkable　achievement　in　energy　saving　has　been　made.　The　global　warming　potential　(GWP)　also　reduce　sharply.　The　results　show　that　the　aluminum　industry　has　made　remarkable　achievement　in　energy　saving　and　emission　reduction.　The　energy　consumption　and　GWP　of　primary　aluminum　in　China　are　still　higher　than　that　in　European　and　the　world　average,　mainly　due　to　coal-based　energy　structure.　The　energy　consumption　of　recycled　aluminum　production　is　only　4.86%　of　the　primary　aluminum,　the　GWP　is　only　1/24　of　the　primary　aluminum.　Compared　with　the　foreign　level,　the　main　difference　in　recycled　aluminum　is　that　the　energy　consumption　is　higher　in　transportation　and　high　carbon　emission　of　fuel.