The invention relates to a trusted computer system based on a safe password chip and a trusted guiding method thereof. The system comprises a main platform and the safe password chip. The main platform comprises a main processor, an internal memory, an external memory, a bus and an external device. The main processor comprises a command cache unit, a data cache unit, an executing unit and a second-level cache unit. According to the trusted computer system and the trusted guiding method, when the system is started, the safe password chip runs before the main processor runs, pushes a CRTM to the command cache unit and awakes the main processor; the main processor performs execution from the CRTM, measures and loads a guide program, an operating system, an application program and the like through the safe password chip and builds a trusted chain; the safe password chip participates in the whole trusted guiding process and can not be bypassed; the CRTM is retained inside the safe password chip, other programs running on the main processor can not meet the CRTM and can also not analyze and distort the CRTM, the safer effect is achieved, and the system is more stable.