The invention discloses a low power consumption voltage regulator circuit, which comprises a charge pump, a comparator, a first capacitor, a second capacitor, a first resistor and a second resistor, wherein the comparator is connected with a third switch; the third switch is controlled by a first control signal generated by a subthreshold current oscillator to control the work cycle of the comparator; a resistor-capacitor network is connected with first and second switches; and the first and second switches are controlled by a second control signal generated by the subthreshold current oscillator to control the refresh cycle of a resistor voltage divider to a capacitor voltage divider. By the low power consumption voltage regulator circuit, a detection voltage error in the capacitor voltage divider caused by electric leakage can be avoided, so that the charge pump can normally work to meet the requirement on voltage; and moreover, the highest output voltage of the charge pump is limited to be 2.7V, so that a defect that high voltage resistant devices are required in the prior art is overcome, the high voltage output range is reduced, the efficiency of the charge pump is improved and the power consumption is reduced.