Background:　With　the　complexity　of　the　network　structure　and　the　diversity　of　access,　the　access　control　model　of　distributed　permissions　management　came　into　being.　Aims:　The　central　idea　of　the　model　is　to　store　the　access　permissions　of　all　nodes　in　the　model　to　the　network　nodes　covered　by　the　access　control　model,　and　let　the　neighboring　nodes　act　as　access　control　agents.　That　is,　each　node　in　the　model　is　a　routing　node　in　the　execution　of　a　certain　access　control.　Methods:　Considering　the　execution　parameters　of　distributed　access　control　model,　the　evaluation　index　of　key　node　identification　technology　in　distributed　authorized　access　control　model　is　estab-lished.　Access　control　to　achieve　the　management　of　distributed　permissions.　It　is　necessary　to　pro-tect　the　key　nodes　in　the　model,　increase　the　robustness　of　the　access　control　model　and　support　the　smooth　implementation　of　distributed　access.　Results:　This　paper　presents　a　key　node　recognition　algorithm　based　on　distributed　access　control　magic.　The　application　of　key　node　recognition　algorithm　in　distributed　access　control　model　in　traditional　network　is　compared.　Conclusion:　Compared　with　the　traditional　key　node　recognition　algorithm　in　the　distributed　access　control　model,　the　algorithm　proposed　in　this　paper　is　more　accurate.　©　2021　Bentham　Science　Publishers.