In　pervasive　computing　environments,　resources　and　services　are　usually　provided　by　a　variety　of　different　suppliers　with　multiple　computing　devices　and　from　heterogeneous　networks.　Accordingly,　various　privacy　protection　methods　with　lots　of　privacy　policies　were　used.　Before　some　meaningful　interaction　starts　or　services　offers,　a　certain　level　of　trust　must　be　established,　this　trust　establishment　and　communication　process　may　involve　privacy　information　exchange.　Consequently,　a　method　for　integrate　the　privacy　protection　methods　and　deal　with　privacy　and　trust　tradeoff　is　necessary.　In　this　paper,　we　propose　a　novel　trust　based　privacy　protection　method　by　using　a　three　levels　trust　based　privacy　protection　model　(TPPM).　Our　main　contributions　include:　(1)　TPPM　can　integrate　the　various　privacy　protection　methods　and　specify　privacy　policies;　(2)　TPPM　can　automatic　make　privacy　disclose　decision　with　achieving　the　goal　of　less　privacy　information　loss　and　more　trust　gain　during　the　trust　establishment　and　the　interaction　process;　(3)　our　method　can　be　used　in　kinds　of　applications　scenarios　flexibly.　Simulation　results　and　analysis　show　our　method　can　accomplish　privacy　preserving　and　fast　trust　establishment　well.　©　2012　ACADEMY　PUBLISHER.