In this paper, based on the characteristics of information system and the need for access control, a set of permissions control component is designed and implementated using RBAC model on the platform of .Net framework. Furthermore, with the introduction of the authority commission, hierarchical authorization and UBAC features, the RBAC model is expanded in the design process, and is applied to the component of multiple EIS system development process. Finally, the results show that the component can be integrated quite well in information system. It reduces the complexity of the development, and improves the efficiency of permissions management work.