Grid Resource Management and security issues go hand in hand in the success of any Grid application. The present day research is moving towards achieving a secured architecture for resource management in Grid System. We hereby, through this paper, wish to present a secured grid resource management for global grids by addition of a trust-based layer whereby allowing grid resource to enter the commercial area, wherein it shall help the grid consumer in Decision Making, as the system will offer only those gird resources which assure of a high degree of trust relationship of grid resource provider. For the successful deployment of a Grid infrastructure, it is essential to access and make maximum use of the resources that are available on the Grid and this is possible only if the secured resources can be tracked effectively and efficiently. It is achieved by presenting a secured Grid Resource Management System based on Trust-Management System.