This washing machine comprises a cabinet having a first opening and forming a washing space therein, and a door assembly provided to open and close the first opening. The door assembly comprises: a door unit provided to be capable of rotating with respect to the cabinet, and having one side forming a second opening and the other side having a guide duct connected to the washing space; an auxiliary door opening and closing the second opening; and a sealing assembly configured to seal the other side of the guide duct. Through this configuration, sealing from the inside of a washing machine can be effectively achieved.
