This　paper　presents　an　approach　for　automated　mapping　metadata　according　to　the　characteristics　of　metadata.　A　metadata　tree　matching　model　is　constructed　with　tree　matching　theory.　First,　the　metadata　should　be　transformed　as　a　rooted　unordered　tree.　Then,　node　and　structural　matching　could　be　conducted.　Finally,　we　get　metadata　node　pairs　matched　successfully.　Accordingly　a　metadata　tree　matching　algorithm　is　proposed　based　on　tree　path　matching.　The　matching　model　and　algorithm　can　be　applied　in　automated　mapping　of　heterogeneous　metadata,　which　could　construct　the　foundation　of　information　resource　integration,　management　and　interaction.　©　2010　IEEE.