The invention discloses an efficient computer power management system which comprises a power temperature management chip, a power voltage management chip, a power current management chip, a power quantity management module, an alarm unit and a remote mobile terminal. The power temperature management chip, the power voltage management chip and the power current management chip respectively comprises a micro-processing chip, a plurality of first register components and a plurality of register interfaces, and each register component is connected with the corresponding register interface. According to the efficient computer power management system, input voltage, input current and power temperature of the register components are conveniently monitored and managed, and rapid reaction warning and relative operation can be achieved when input voltage or input current or power temperature of one register component is unqualified, so that the computer power management system has the advantage of high efficiency.