To　effectively　solve　the　problem　between　entities　acess,　information　games　and　repeated　games　in　a　trust-based　access　control　model　were　analyzed　by　applying　the　method　of　game　theory,　and　the　game　theory　and　trust　evaluation　were　combined.　A　restriction　mechanism　of　long-term　credit　access　between　nodes　was　designed,　and　a　main　scheme　of　trust-based　dynamic　access　control　model　and　strategies　of　relatively　key　technologies　were　presented.　Safety　analysis　shows　that　the　proposed　approach　is　highly　efficient　and　secure.