Because　of　self-occlusion,　browsing　3D　objects　is　a　typical　random　access　problem.　After　compression,　if　only　the　data　of　visible　regions　under　the　current　viewing　parameter　is　transmitted　and　decoded,　the　network　bandwidth　and　decoding　resources　can　be　saved.　Almost　all　state-of-the-art　mesh　compression　schemes　do　not　take　random　access　into　account.　A　progressive　geometry　compression　scheme　based　on　wavelet　transform,　which　supports　interactive　browsing,　is　proposed.　The　main　idea　is　to　partition　the　mesh　into　many　blocks　and　encode　the　details　of　each　block　independently,　and　then　transmit　only　the　encoded　details　of　visible　blocks.　The　wavelet　coefficients　which　represent　mesh　details　are　grouped　into　zerotrees,　and　each　zerotree　is　compressed　independently　using　a　modified　SPIHT　algorithm.　The　experimental　results　indicate　that　the　proposed　scheme　has　achieved　comparable　compression　efficiency　with　PGC,　and　the　amount　of　data　required　to　reconstruct　only　visible　regions　is　about　60%　of　the　complete　bitstream.