Abstract: Investigating in depth the existing conceptual designs of trusted mobile platforms and technology of the TCG mobile trusted module, a new conceptual design of trusted mobile platform based on the module is proposed, of which the base-band processor is separated from application processor. The trusted region with the application processor as a center is constructed in the design to provide a protected space for computing and storage, thus improving the security, flexibility and reliability of the platform. Analyzing the vulnerabilities of security bootstrapping procedures in existing trusted mobile platforms, an improved procedure is proposed and it is verified according to predicate logic.