Abstract: Privilege management is an very important part for management information system(MIS)．Nowadays,the existing privilege management methods are coarse or confused,and they can’t implement integrated and elaborate privilege management．On the other hand,others privilege management schemes maybe good,but they can’t match current mainstream software development models and frameworks,and can’t provide better exercisablility．Therefore,this paper improved and refined traditional RBAC model based on domain-driven to construct and implement a finer-grained privilege model for MIS．The paper also showed the whole privilege management process for constructing,and provided a whole solvable project for developing privilege management．

Key words: RBAC,Privilege management,Finer-grained,Domain-driven,MIS