In this paper, we propose a new role-based trust management framework which is based on trusted computing platform. Trusted computing platform may provide safe storage for credentials and keys in trust management system. As making authorization decision, the userpsilas properties and the platformpsilas properties are all needed to be checked. Hence, this approach can greatly improve the security and autonomy of the role-based framework. We give the general form of platform credentials, the unified security policy and compliance checking algorithm.