The invention discloses a power supply type voltage transformer with a voltage metering function. The power supply type voltage transformer comprises a first component, a power output unit, a voltagemetering unit, a current transformer and compensation impedance, wherein the first component is used for receiving voltage; the power output unit outputs power, and outputs second voltage; the voltagemetering unit is a voltage transformer which converts the second voltage into third voltage, and is used for carrying out voltage metering; and the current transformer is used for measuring load current; and the compensation impedance is connected with the secondary side windings of the voltage metering unit in series, is connected with the current transformer in parallel, and is used for compensating pressure drop generated by load current on the primary side leakage reactance and the secondary side leakage reactance of the voltage metering unit to realize the compensation of voltage metering errors. By use of the power supply type voltage transformer, a certain number value of compensation impendence can be connected on the load current in parallel, and is connected to the loop of the voltage metering unit winding in series for carrying out error compensation, and an error meets metering-level error limiting value requirements when power is subjected to full load output from zero.