A refrigerator comprising: a main body having an upper storage compartment and a lower storage compartment (22, 23); a first door (31, 32) configured to open and close the upper storage compartment; and a second door (33, 34) configured to open and close the lower storage compartment (22, 23), the second door (33, 34) including: a door panel including: a panel body, a door body to which the door panel is detachably coupled so that the door panel is at a front side of the door body, characterized in that the door panel further includes: an upper trim on a rear side of the panel body, and a lower trim on the rear side of the panel body and including a first lower trim hole and a second lower trim hole spaced apart from each other along a lower edge of the panel body, and in that the door body includes: an upper cap including an upper cap protrusion protruding downward and coupled to the upper trim, and a lower cap including a first lower cap hole and a second lower cap hole spaced apart from each other and positioned to correspond to the first lower trim hole and the second lower trim hole, respectively, a first fixer coupled to the lower cap and inserted into the first lower cap hole and the first lower trim hole in an upward direction, and a second fixer coupled to the lower cap and inserted into the second lower cap hole and the second lower trim hole in the upward direction. a main body having an upper storage compartment and a lower storage compartment (22, 23); a first door (31, 32) configured to open and close the upper storage compartment; and a second door (33, 34) configured to open and close the lower storage compartment (22, 23), the second door (33, 34) including: a door panel including: a panel body, a door body to which the door panel is detachably coupled so that the door panel is at a front side of the door body, characterized in that the door panel further includes: an upper trim on a rear side of the panel body, and a lower trim on the rear side of the panel body and including a first lower trim hole and a second lower trim hole spaced apart from each other along a lower edge of the panel body, and in that the door body includes: an upper cap including an upper cap protrusion protruding downward and coupled to the upper trim, and a lower cap including a first lower cap hole and a second lower cap hole spaced apart from each other and positioned to correspond to the first lower trim hole and the second lower trim hole, respectively, a first fixer coupled to the lower cap and inserted into the first lower cap hole and the first lower trim hole in an upward direction, and a second fixer coupled to the lower cap and inserted into the second lower cap hole and the second lower trim hole in the upward direction. a door panel including: a panel body, a door body to which the door panel is detachably coupled so that the door panel is at a front side of the door body, characterized in that the door panel further includes: an upper trim on a rear side of the panel body, and a lower trim on the rear side of the panel body and including a first lower trim hole and a second lower trim hole spaced apart from each other along a lower edge of the panel body, and in that the door body includes: an upper cap including an upper cap protrusion protruding downward and coupled to the upper trim, and a lower cap including a first lower cap hole and a second lower cap hole spaced apart from each other and positioned to correspond to the first lower trim hole and the second lower trim hole, respectively, an upper trim on a rear side of the panel body, and a lower trim on the rear side of the panel body and including a first lower trim hole and a second lower trim hole spaced apart from each other along a lower edge of the panel body, and in that the door body includes: an upper cap including an upper cap protrusion protruding downward and coupled to the upper trim, and a lower cap including a first lower cap hole and a second lower cap hole spaced apart from each other and positioned to correspond to the first lower trim hole and the second lower trim hole, respectively, an upper cap including an upper cap protrusion protruding downward and coupled to the upper trim, and a lower cap including a first lower cap hole and a second lower cap hole spaced apart from each other and positioned to correspond to the first lower trim hole and the second lower trim hole, respectively, a first fixer coupled to the lower cap and inserted into the first lower cap hole and the first lower trim hole in an upward direction, and a second fixer coupled to the lower cap and inserted into the second lower cap hole and the second lower trim hole in the upward direction.