The　sensing　layer　of　Internet　of　Things　is　composed　of　heterogeneous　sensing　networks,　sensing　layer　data　is　fast　and　reliable　transmission　is　the　basis　of　trusted　operation　of　the　Internet　of　things,　the　choice　of　routing　in　the　data　transmission　process　is　critical　to　the　life　cycle　of　the　sensing　node,　the　success　rate　of　data　transmission,　and　the　feedback　control　of　the　network　layer　and　application　layer.　But　the　current　sensing　layer　routing　mechanism　lacks　credible　considerations　for　data　transmission　paths　and　its　environmental　adaptability　is　poor.　In　order　to　ensure　that　the　Internet　of　things　perceived　layer　of　data　quickly　and　reliably　transmitted,　this　chapter　presents　a　trusted　routing　mechanism　for　sensing　nodes,　based　on　the　node　trust　measure,　this　model　calculates　the　bandwidth　and　energy　available　between　nodes,　taking　into　account　the　influence　of　available　bandwidth　and　energy　on　data　transmission　between　nodes.　It　uses　the　dynamic　programming　method　to　calculate　the　trusted　path　of　data　transmission　between　nodes,　to　ensure　that　the　data　transmission　between　trusted　nodes　trusted.　The　routing　mechanism　proposed　in　this　chapter　has　the　characteristics　of　low　overhead,　high　scalability　and　easy　project　realization.　Simulation　experiments　show　that　the　routing　mechanism　is　good　to　against　attack,　extensive　environmental　adaptability,　can　effectively　resist　selective　forwarding　attacks,　node　hijacking　attacks.　Compared　with　the　existing　scheme,　this　mechanism　effectively　reduces　the　communication　overhead　in　the　routing　establishment　process,　and　significantly　improves　the　network　performance　and　has　a　good　application　prospect.　©　Springer　Nature　Singapore　Pte　Ltd.　2017.