A control method of the same are disclosed. A control method of a laundry treating machine comprising an accommodating space receiving laundry therein, the control method includes selecting one of at least two sanitary courses to sanitize objects, and supplying steam to the objects, with controlling a temperature of the accommodating space and a steam supplying time to maintain a temperature of the object to be at a predetermined sanitary standard temperature or higher for a predetermined sanitary standard time according to the selected course. According to the control method of the present invention, steam may be supplied appropriately according to the load amount of the laundry treating machine such that damage of laundry fabric may be prevented, sanitizing, or sterilizing the laundry.