A refrigerator, comprising: a main body having a storage chamber; a door arranged to open and close the storage chamber, the door comprising: a panel member provided with a display window and configured to form a front exterior of the door of the refrigerator; an inner case spaced apart from the panel member and configured to form a rear exterior of the door of the refrigerator; a deco member coupling the panel member and the inner case and having an inserting part; a display case provided at one side of the panel member and coupled to the deco member, insulating material filled in an insulating space between the panel member and the inner case; a display unit mounted to the display case through the inserting part; wherein the display unit includes: a display part mounted on a printed circuit board; a unit guide on which the printed circuit board is mounted; guide ribs formed on the unit guide; characterized in that a plurality of mounting guides guide are provided on a rear surface of the panel member to guide a mounting location of the unit guide of the display unit, wherein the guide ribs are coupled to the mounting guides when the display unit is inserted in the display case. a main body having a storage chamber; a door arranged to open and close the storage chamber, the door comprising: a panel member provided with a display window and configured to form a front exterior of the door of the refrigerator; an inner case spaced apart from the panel member and configured to form a rear exterior of the door of the refrigerator; a deco member coupling the panel member and the inner case and having an inserting part; a display case provided at one side of the panel member and coupled to the deco member, insulating material filled in an insulating space between the panel member and the inner case; a display unit mounted to the display case through the inserting part; a panel member provided with a display window and configured to form a front exterior of the door of the refrigerator; an inner case spaced apart from the panel member and configured to form a rear exterior of the door of the refrigerator; a deco member coupling the panel member and the inner case and having an inserting part; a display case provided at one side of the panel member and coupled to the deco member, insulating material filled in an insulating space between the panel member and the inner case; a display unit mounted to the display case through the inserting part; wherein the display unit includes: a display part mounted on a printed circuit board; a unit guide on which the printed circuit board is mounted; guide ribs formed on the unit guide; characterized in that a plurality of mounting guides guide are provided on a rear surface of the panel member to guide a mounting location of the unit guide of the display unit, a display part mounted on a printed circuit board; a unit guide on which the printed circuit board is mounted; guide ribs formed on the unit guide; characterized in that a plurality of mounting guides guide are provided on a rear surface of the panel member to guide a mounting location of the unit guide of the display unit, wherein the guide ribs are coupled to the mounting guides when the display unit is inserted in the display case.