A controlling method of a laundry machine comprising: - receiving a selection of an allergy care course from a user; - washing laundry, the washing laundry including: supplying wash water to a tub for washing laundry; a mite-killing step of making an environment inside the drum by supplying steam into the drum until an ambient temperature or water temperature inside a tub reaches a preset ambient temperature or water temperature to make laundry exposed to a mite-killing temperature at, and for or over a preset duration of time, the mite-killing step being performed after the wash water supplying, driving the drum until a preset washing time is reached after the supply of steam is complete; - rinsing the laundry after the washing laundry; and - spin-drying the rinsed laundry; wherein the preset ambient temperature or water temperature is 55 °C to 60 °C and the preset duration is over 10 minutes, wherein the laundry inside the drum is exposed to over the mite-killing temperature for or over 10 minutes, and the mite-killing is performed for the preset duration of time before and after the ambient temperature or water temperature reaches the preset temperature. - receiving a selection of an allergy care course from a user; - washing laundry, the washing laundry including: supplying wash water to a tub for washing laundry; a mite-killing step of making an environment inside the drum by supplying steam into the drum until an ambient temperature or water temperature inside a tub reaches a preset ambient temperature or water temperature to make laundry exposed to a mite-killing temperature at, and for or over a preset duration of time, the mite-killing step being performed after the wash water supplying, driving the drum until a preset washing time is reached after the supply of steam is complete; supplying wash water to a tub for washing laundry; a mite-killing step of making an environment inside the drum by supplying steam into the drum until an ambient temperature or water temperature inside a tub reaches a preset ambient temperature or water temperature to make laundry exposed to a mite-killing temperature at, and for or over a preset duration of time, the mite-killing step being performed after the wash water supplying, driving the drum until a preset washing time is reached after the supply of steam is complete; - rinsing the laundry after the washing laundry; and - spin-drying the rinsed laundry; wherein the preset ambient temperature or water temperature is 55 °C to 60 °C and the preset duration is over 10 minutes, wherein the laundry inside the drum is exposed to over the mite-killing temperature for or over 10 minutes, and the mite-killing is performed for the preset duration of time before and after the ambient temperature or water temperature reaches the preset temperature. wherein the preset ambient temperature or water temperature is 55 °C to 60 °C and the preset duration is over 10 minutes, wherein the laundry inside the drum is exposed to over the mite-killing temperature for or over 10 minutes, and the mite-killing is performed for the preset duration of time before and after the ambient temperature or water temperature reaches the preset temperature.