A home appliance comprising: a cabinet having an introduction port therein; a tub provided in the cabinet; a communication hole, through which an interior of the tub communicates with the introduction port; a door comprising a first door body for opening and closing the introduction port and a second door body protruding from the first door body toward the tub for closing the communication hole when the first door body closes the introduction port; and a holder fixed to the door, the holder being located in a space defined between the closing surface and the first door body, a housing provided at the cabinet; characterized by further comprising: a first stopper provided at the housing, the first stopper being located between the introduction port and the communication hole; a fastening unit separably supported by the first stopper, the fastening unit being coupled to the holder when separated from the first stopper; an actuation unit configured to reciprocate in the housing, the actuation unit being moved toward the communication hole in a state of contacting the holder when the first door body is moved in a direction in which the introduction port is closed, the actuation unit being configured to separate the fastening unit from the first stopper while the actuation unit is moved toward the communication hole; a first elastic member for providing force necessary to move the fastening unit toward the communication hole when the fastening unit is separated from the first stopper; a second elastic member (981, 983) for providing force necessary to move the actuation unit toward the introduction port; and an actuation unit lock separably coupled to the actuation unit, the actuation unit lock being configured to be separated from the actuation unit such that the actuation unit can reciprocate in the housing when in contact with the closing surface and configured to be coupled to the actuation unit such that a position of the actuation unit is fixed when not in contact with the closing surface. a cabinet having an introduction port therein; a tub provided in the cabinet; a communication hole, through which an interior of the tub communicates with the introduction port; a door comprising a first door body for opening and closing the introduction port and a second door body protruding from the first door body toward the tub for closing the communication hole when the first door body closes the introduction port; and a holder fixed to the door, the holder being located in a space defined between the closing surface and the first door body, a housing provided at the cabinet; characterized by further comprising: a first stopper provided at the housing, the first stopper being located between the introduction port and the communication hole; a fastening unit separably supported by the first stopper, the fastening unit being coupled to the holder when separated from the first stopper; an actuation unit configured to reciprocate in the housing, the actuation unit being moved toward the communication hole in a state of contacting the holder when the first door body is moved in a direction in which the introduction port is closed, the actuation unit being configured to separate the fastening unit from the first stopper while the actuation unit is moved toward the communication hole; a first elastic member for providing force necessary to move the fastening unit toward the communication hole when the fastening unit is separated from the first stopper; a second elastic member (981, 983) for providing force necessary to move the actuation unit toward the introduction port; and an actuation unit lock separably coupled to the actuation unit, the actuation unit lock being configured to be separated from the actuation unit such that the actuation unit can reciprocate in the housing when in contact with the closing surface and configured to be coupled to the actuation unit such that a position of the actuation unit is fixed when not in contact with the closing surface. a first stopper provided at the housing, the first stopper being located between the introduction port and the communication hole; a fastening unit separably supported by the first stopper, the fastening unit being coupled to the holder when separated from the first stopper; an actuation unit configured to reciprocate in the housing, the actuation unit being moved toward the communication hole in a state of contacting the holder when the first door body is moved in a direction in which the introduction port is closed, the actuation unit being configured to separate the fastening unit from the first stopper while the actuation unit is moved toward the communication hole; a first elastic member for providing force necessary to move the fastening unit toward the communication hole when the fastening unit is separated from the first stopper; a second elastic member (981, 983) for providing force necessary to move the actuation unit toward the introduction port; and an actuation unit lock separably coupled to the actuation unit, the actuation unit lock being configured to be separated from the actuation unit such that the actuation unit can reciprocate in the housing when in contact with the closing surface and configured to be coupled to the actuation unit such that a position of the actuation unit is fixed when not in contact with the closing surface.