A control method of a laundry machine, the laundry machine comprising a tub and/or a drum , a duct configured to communicate with the tub and/or the drum , and a heater , a nozzle to directly eject water to the heater and a blower which are arranged within the duct , the method comprises: a preparation operation (S5) of heating the heater , which occupies a partial space within the duct , to create a high temperature external environment of the heater that is suitable for steam generation, wherein actuation of the nozzle and/or the blower stops in the preparation operation (S5) or stopping actuation of the nozzle and/or the blower is maintained for a partial duration of the preparation operation (S5); a steam generation operation (S6) of generating steam by directly supplying water to the heater using the nozzle , wherein actuation of the blower stops in the steam generation operation (S6) or stopping actuation of the blower is maintained for a partial duration of the steam generation operation (S6); and a steam supply operation (S7) of generating air flow within the duct by rotating the blower and to supply the generated steam to the laundry in the drum , wherein the steam supply operation (S7) at least includes a duration for which simultaneous actuation of the heater , the nozzle , and the blower is performed, characterized in that the steam generation operation (S6) and the steam supply operation (S7) include ejecting water to the heater from the nozzle installed in or to a blower housing surrounding the blower to be close to a discharge portion of the blower through which air having passed through the blower is discharged, and wherein the heater is located at one longitudinal side of the duct , and the blower is located at the other longitudinal side of the duct . a preparation operation (S5) of heating the heater , which occupies a partial space within the duct , to create a high temperature external environment of the heater that is suitable for steam generation, wherein actuation of the nozzle and/or the blower stops in the preparation operation (S5) or stopping actuation of the nozzle and/or the blower is maintained for a partial duration of the preparation operation (S5); a steam generation operation (S6) of generating steam by directly supplying water to the heater using the nozzle , wherein actuation of the blower stops in the steam generation operation (S6) or stopping actuation of the blower is maintained for a partial duration of the steam generation operation (S6); and a steam supply operation (S7) of generating air flow within the duct by rotating the blower and to supply the generated steam to the laundry in the drum , wherein the steam supply operation (S7) at least includes a duration for which simultaneous actuation of the heater , the nozzle , and the blower is performed, characterized in that the steam generation operation (S6) and the steam supply operation (S7) include ejecting water to the heater from the nozzle installed in or to a blower housing surrounding the blower to be close to a discharge portion of the blower through which air having passed through the blower is discharged, and wherein the heater is located at one longitudinal side of the duct , and the blower is located at the other longitudinal side of the duct . <EOS>