The invention discloses an android system based on software TCM and a trusted software stack and a trusted authentication system and method thereof, and belongs to the technical field of android system and android software safety.The android system comprises the software TCM built on an android core of an existing android system, the trusted software stack and a software TCM driving module; the software TCM and the trusted software stack are embedded into a system library of the existing android system; the trusted software stack is arranged on the software TCM; the software TCM driving module is located on a Linux core layer of the existing android system.The trusted authentication system comprises a trusted authentication system started by the android system and a trusted authentication system installed by the android software.The trusted authentication method includes the steps of the starting trusted authentication process of the android system and the installing trusted authentication process of the android software.According to the android system based on the software TCM and the trusted software stack and the trusted authentication system and method thereof, the integration solution of the safety of the android operating system is achieved based on the trusted computing thought, checkout to the integrity of an android terminal is additionally conducted, protection of a system bottom layer is reinforced, third-party software in the android terminal is also safe and credible, and therefore the android terminal is absolutely safe.