A word-line voltage regulating circuit and a single power supply memory are disclosed. The word-line voltage regulating circuit includes: a charge pump for raising an input voltage to a desired value and outputting the raised input voltage as an output voltage; a controller for inputting a refresh signal to the charge pump according to the output voltage of the charge pump; and a comparator for inputting a feedback signal to the charge pump according to a comparison result between the output voltage of the charge pump and a reference voltage. The charge pump works under control of the refresh signal when the memory is in an active mode, and works under control of the feedback signal when the memory is in a standby mode. The word-line voltage regulating circuit can effectively reduce the power consumption and can meet the requirement for proportional scale-down of integrated circuits.