Access　control　is　an　important　mechanism　to　protect　sensitive　information　and　relational　system　resources.　The　traditional　access　control　model　(TACM),　such　as　DAC,　MAC,　RBAC,　etc.,　is　no　longer　suitable　for　open　network　due　to　the　lack　of　dynamic　permission　management.　The　increasing　network　nodes　make　the　information　storage　and　resource　access　becoming　distributed.　The　traditional　access　control　model　has　the　characteristics　of　low　adaptive　ability　and　single　deployment　and　application　mode　due　to　the　centralized　management　mode.　Therefore,　this　access　control　environment　inevitably　puts　access　control　pressure　on　access　control　authorization.　In　order　to　overcome　the　shortcomings　of　traditional　access　control　model,　a　new　access　control　model　named　DMPAC　(Distributed　management　of　permission　for　access　control　model)　is　proposed　in　the　paper.　The　authorization　mechanism　of　the　model　has　a　distributed　and　dynamic　management　access　permission,　and　all　nodes　covered　by　the　model　have　the　opportunity　to　participate　in　the　execution　of　access　and　control.　The　model　DMPAC　provides　the　benefits　of　traditional　access　control　models　in　terms　of　secure　access　and　dynamic　management.　We　also　describe　the　framework　and　execution　process　of　the　model　and　the　application　of　DMPAC　in　access　control.　At　last,　we　will　present　some　experimental　results　to　show　that　while　maintaining　the　effectiveness　of　distributed　access　control　through　the　management　of　access　permissions,　DMPAC　can　achieve　the　performance　of　traditional　access　control　models.