Mobile　agent,　as　a　promising　distributed　computing　technology,　can　be　used　in　many　fields.　The　security　problem　of　mobile　agent　is　important　for　applications　based　on　mobile　agent　technology.　In　this　paper,　we　proposed　a　trust　management　model　for　mobile　agent　system　to　improve　the　security　of　the　mobile　agent　system.　In　this　model,　the　security　of　mobile　agent　is　improved　by　using　the　trusted　computing　platform　integrated　with　trusted　hardware.　The　trust-supporting　environment　can　proved　the　trust　management　for　entities　in　mobile　agent　system　through　the　trusted　software　stacks　which　can　communicate　with　the　lower　trusted　hardware.　hi　this　model　system,　some　important　services　for　trust　management,　such　as　mobile　agent　authentication,　mobile　agent　credential　application,　mobile　agent　proxy　service,　mobile　agent　trusted　connection,　and　integrity　measurement　among　mobile　agents　and　computing　platforms,　are　provided　by　using　trusted　computing　technology.