PURPOSE: To improve efficiency and to improve the finishing of a steam pressed material by controlling the driving frequency of a pump according to the temperature of an iron base and making steam generation quantity into appropriate one.

CONSTITUTION: When the generation of steam is instructed by operating a steam generation command part, a microcomputer 19 first confirms that a steam flag is under an OFF state, displays the OFF state on a display part 5, and turns the steam flag on. Further, the microcomputer 19 controls the temperature of an iron base 4, controls the driving of a pump 7 with the required driving frequency according to on/off control for a transistor, and generates the required quantity of steam. Thus, since the driving frequency of the pump is adjusted according to the temperature of the iron base, the steam quantity can be controlled in detail as compared to a conventional iron in which the driving frequency is constant for each temperature zone regardless of the temperature of the iron base.