A dishwasher comprising: a main body; a washing bath that is provided in the main body; a door that is rotatably coupled to the main body to access the washing bath; and a door opening unit to automatically open the door, wherein the door opening unit comprises: an actuator that applies force to the door opening unit in one direction when power is applied to the actuator; a link member that makes a straight motion due to pressurization of the actuator and has a plurality of legs (121, 122), characterised by a plurality of rotation levers (130, 140) that are connected to the plurality of legs (121, 122) of the link member so as to make rotation motions around a rotation shaft (132, 142) while being interlocked with the straight motion of the link member; a plurality of pressurization members (150, 160) that are connected to the plurality of rotation levers (130, 140) and that pressurize and open the door so as to make straight motions while being interlocked with the rotation motions of the plurality of rotation levers (130, 140); a buffer spring provided between the actuator and the link member; and a restoring spring that is provided to restore the plurality of pressurization members (150, 160) to original positions of the plurality of pressurization members (150, 160). a main body; a washing bath that is provided in the main body; a door that is rotatably coupled to the main body to access the washing bath; and a door opening unit to automatically open the door, wherein the door opening unit comprises: an actuator that applies force to the door opening unit in one direction when power is applied to the actuator; a link member that makes a straight motion due to pressurization of the actuator and has a plurality of legs (121, 122), characterised by a plurality of rotation levers (130, 140) that are connected to the plurality of legs (121, 122) of the link member so as to make rotation motions around a rotation shaft (132, 142) while being interlocked with the straight motion of the link member; a plurality of pressurization members (150, 160) that are connected to the plurality of rotation levers (130, 140) and that pressurize and open the door so as to make straight motions while being interlocked with the rotation motions of the plurality of rotation levers (130, 140); a buffer spring provided between the actuator and the link member; and a restoring spring that is provided to restore the plurality of pressurization members (150, 160) to original positions of the plurality of pressurization members (150, 160). an actuator that applies force to the door opening unit in one direction when power is applied to the actuator; a link member that makes a straight motion due to pressurization of the actuator and has a plurality of legs (121, 122), characterised by a plurality of rotation levers (130, 140) that are connected to the plurality of legs (121, 122) of the link member so as to make rotation motions around a rotation shaft (132, 142) while being interlocked with the straight motion of the link member; a plurality of pressurization members (150, 160) that are connected to the plurality of rotation levers (130, 140) and that pressurize and open the door so as to make straight motions while being interlocked with the rotation motions of the plurality of rotation levers (130, 140); a buffer spring provided between the actuator and the link member; and a restoring spring that is provided to restore the plurality of pressurization members (150, 160) to original positions of the plurality of pressurization members (150, 160).