A device for adjusting a full-ice level includes: an ice making tray for making ice; an ice making tray fixing unit positioned on both sides of the ice making tray to support the ice making tray; an ice storage unit positioned below the ice making tray and for storing ice that is separated from and drops from the ice making tray; a full-ice level sensor for sensing the highest level of ice stored in the ice storage unit; a sensor guide on which the full-ice level sensor is installed, and positioned in the ice storage unit; and a motor on one side of the ice making tray fixing unit and coupled with the sensor guide, and for moving the sensor guide upward and downward in the ice storage unit.