Steam-vacuum cleaner with controlling electric power function and method thereof

A steam/vacuum cleaner having a power control function is provided to use steam, vacuum steam and vacuum cleaning functions simultaneously within the limits of the power capacity of a wire supplying power by keeping the entire power consumption of a steam/vacuum cleaner below the critical value. A steam/vacuum cleaner comprises a suction motor(110) rotating to generate suction force, a heater(115) generating heat to generate steam, a power supply unit(120) supplying power to the suction motor and the heater, a power consumption measuring unit(125) measuring the entire power consumption of the suction motor and the heater in the power supply unit, and a control unit(130) controlling one of the rotating speed of the suction motor and the heat generation of the heater to keep the entire power consumption of the suction motor and the heater below the critical value.