<p>The present invention relates to a washing machine including a filter device using water supply pressure and a support unit or an auxiliary damper. According to the present invention, the washing machine comprises a casing; a water tank installed in the casing; a water supply pipe supplying washing water by being connected to the upper part of the water tank; a water discharge pipe discharging the washing water by being connected to the lower part of the water tank; and a filter device which removes foreign substance from the washing machine while transferring the washing water from one side of the water tank. The washing machine can remove foreign substances from laundry without the supply of additional power by using the pressure of water which is supplied according to the process of washing progress, and does need to replace or clean the filter device by allowing the foreign substances to escape together with discharged water.</p>
