The　trusted　computing　technology　are　developing　gradually,　and　was　applied　in　the　network　So　the　trusted　network　is　been　proposed　and　researched,　and　method　of　remote　attestation　is　the　key　technique　in　the　study.　According　to　current　situation　of　study,　outline　several　system　of　the　trusted　network　nowadays,　and　analyzed　the　basic　ideas　and　implementations　of　several　typical　remote　attestation　methods,　compared　and　analyzed　their　advantages　and　disadvantages.　At　the　same　time　pointed　out　the　applicable　occasions　of　several　remote　attestation　methods,　putted　forward　some　insufficient　for　these　remote　attestation　methods,　and　pointed　out　the　direction　for　the　future　of　remote　attestation.