Washing machine and washing method

摘要

A washing machine and a washing method thereof are disclosed, in which waste of washing water is reduced and washing efficiency is improved. The washing method includes the steps of determining the volume of laundry in a tub (S10), setting a first water level for a preliminary washing stroke and a second water level for a main washing stroke based on the determined volume of laundry (S20), carrying out the preliminary washing stroke using washing water of the first water level and steam (S30), and converting the preliminary washing stroke into the main washing stroke (S70) based on washing water of the second water level (S60) depending on an inner temperature of the tub (S40).