The invention discloses a dual-system trusted computing system and method. The system comprises a trusted management center and at least one dual-system trusted computing node connected with the trusted management center, the dual-system trusted computing node comprises a computing subsystem and a protection subsystem which are parallel to each other, a security isolation mechanism is arranged between the computing subsystem and the protection subsystem, and interaction is carried out through a special access channel; wherein the computing subsystem is used for executing a computing task, theprotection subsystem is used for measuring and controlling the computing subsystem according to a credible strategy in the credible management center and sending a measurement record to the credible management center, and the credible management center is used for carrying out statistical analysis on the measurement record. According to the system and the method provided by the invention, active safety protection is carried out while calculation is carried out through the parallel calculation subsystem and the protection subsystem, so that calculation tasks are not interfered and damaged, andvarious known and unknown attacks can be resisted.