Access　control　is　a　core　security　technology　to　protect　sensitive　information　and　critical　resources　and　to　counter　malicious　attacks　in　computer　systems　and　networks.　During　the　past　few　decades,　many　access　control　models　have　been　developed,　such　as　discretionary　access　control　(DAC),　mandatory　access　control　(MAC),　role-based　access　control　(RBAC)　and　so　on.　In　this　paper,　we　discuss　the　prisoner＇s　dilemma　in　these　models　and　propose　a　solution　with　trust　to　solve　this　problem.　Then　we　make　a　simulation　to　compare　the　new　access　control　models　with　the　solution　to　the　traditional　ones.