A power control system (110) and a power control method are provided. The power control system (110) is adapted to a computer device (100). The computer device (100) comprises an embedded controller (130) and a power supply (120) both coupled to each other. The power supply (120) provides power to the embedded controller (130). The power control system (110) comprises a device switch input terminal (115) and a logic output terminal (116). The device switch input terminal (115) receives a trigger signal from a component of the computer device (100) to change a state of the computer system. The logic output terminal (116) is coupled to the power supply (120) and performs on-off control of the power supply (120) to provide or stop power to the embedded controller (130) when the switch input terminal (115) receives the trigger signal.
