A full-automatic washing machine with an electric motor for driving an agitator and a dehydration tub includes an inverter main circuit including a plurality of switching elements connected to windings of a plurality of phases of the motor respectively, and a control device for driving the switching elements of the inverter main circuit. The control device executes an increase rate changing control in which a rotational speed of the motor is changed among a plurality of increase rates during drive of the motor in at least one of operation steps between a wash step and a final dehydration step before the motor reaches a final target speed.