An ice making device comprising: an ice tray; a drive part which is provided with an output shaft to which the ice tray is attached and by which the ice tray is turnable through turning of the output shaft; and a frame body to which the drive part is attached; wherein, in use, a twisting operation is applied to the ice tray during a turning operation for separating ice pieces from the ice tray; and wherein the drive part is provided with a drive side attaching part (34a, 34b) which is capable of fitting to a frame body side attaching part (45a, 45b) for attaching the drive part to the frame body within the frame body; the drive part is attached to the frame body by means of that the frame body side attaching part (45a, 45b) and the drive side attaching part (34a, 34b) are fitted to each other along a direction that is perpendicular to the output shaft; characterized in that: the drive side attaching part (34a, 34b) is structured of a pawl piece (34a, 34b) which is protruded from the drive part; the frame body side attaching part (45a, 45b) is structured of a pawl insertion part (45a, 45b) into which the pawl piece (34a, 34b) is inserted; and an area of a first abutting face (452b, 453a) of the pawl insertion part (45a, 45b) which is abutted with the pawl piece (34a, 34b) and which is received with a force in a vertical direction transmitted to the pawl piece (34a, 34b) through the output shaft of the drive part from the ice tray against twisting applied to the ice tray is larger than an area of a second abutting face (452a, 453b) of the pawl insertion part (45a, 45b) which is abutted with the pawl piece (34a, 34b) and which is disposed at a position sandwiching the pawl piece (34a, 34b) with the first abutting face (452b, 453a). an ice tray; a drive part which is provided with an output shaft to which the ice tray is attached and by which the ice tray is turnable through turning of the output shaft; and a frame body to which the drive part is attached; wherein, in use, a twisting operation is applied to the ice tray during a turning operation for separating ice pieces from the ice tray; and wherein the drive part is provided with a drive side attaching part (34a, 34b) which is capable of fitting to a frame body side attaching part (45a, 45b) for attaching the drive part to the frame body within the frame body; the drive part is attached to the frame body by means of that the frame body side attaching part (45a, 45b) and the drive side attaching part (34a, 34b) are fitted to each other along a direction that is perpendicular to the output shaft; characterized in that: the drive side attaching part (34a, 34b) is structured of a pawl piece (34a, 34b) which is protruded from the drive part; the frame body side attaching part (45a, 45b) is structured of a pawl insertion part (45a, 45b) into which the pawl piece (34a, 34b) is inserted; and an area of a first abutting face (452b, 453a) of the pawl insertion part (45a, 45b) which is abutted with the pawl piece (34a, 34b) and which is received with a force in a vertical direction transmitted to the pawl piece (34a, 34b) through the output shaft of the drive part from the ice tray against twisting applied to the ice tray is larger than an area of a second abutting face (452a, 453b) of the pawl insertion part (45a, 45b) which is abutted with the pawl piece (34a, 34b) and which is disposed at a position sandwiching the pawl piece (34a, 34b) with the first abutting face (452b, 453a). the drive side attaching part (34a, 34b) is structured of a pawl piece (34a, 34b) which is protruded from the drive part; the frame body side attaching part (45a, 45b) is structured of a pawl insertion part (45a, 45b) into which the pawl piece (34a, 34b) is inserted; and an area of a first abutting face (452b, 453a) of the pawl insertion part (45a, 45b) which is abutted with the pawl piece (34a, 34b) and which is received with a force in a vertical direction transmitted to the pawl piece (34a, 34b) through the output shaft of the drive part from the ice tray against twisting applied to the ice tray is larger than an area of a second abutting face (452a, 453b) of the pawl insertion part (45a, 45b) which is abutted with the pawl piece (34a, 34b) and which is disposed at a position sandwiching the pawl piece (34a, 34b) with the first abutting face (452b, 453a).