A refrigerator comprising: an insulated cabinet formed into a box shape with an opening in a front and having a plurality of insulation panels (25, 26, 27, 28, 29) comprising a vacuum insulation panel between outer plates (30A, 30B, 30C, 30D, 30E) constituting an external surface and inner plates (31A, 31B, 31C, 31D) constituting an interior surface; vertical reinforcing members provided on opening side edges of right and left sidewall insulation panels constituting the insulated cabinet respectively, wherein the right and left sidewall insulation panels include the outer plates (30B, 30C) having bent portions which are located in front of the vacuum insulation panels and spaced from the vacuum insulation panels opening side ends of the right and left sidewall insulation panels are bent to the interior side to form the bent portions; and the vertical reinforcing members are provided along sidewall insulation panel side surfaces of the bent portions respectively, an upper reinforcing member includes a middle plate having two ends, a right plate and a left plate; characterized by the right plate and the left plate dropping perpendicularly from the ends of the middle plate respectively; wherein the right and left plates (52c, 52b) are inserted into fronts of right and left sidewall insulation panels (26, 27) from the above, in contact with an inner surface of the vertical reinforcement member respectively, and fixed to a front edge of a ceiling wall insulation panel; the vertical reinforcing members include an outer plate, a middle plate and an inner plate and have an open rear thereby to be formed into the shape of a groove and wherein the bent portions include an outer protuberance (30b1), a middle portion (30b2) and an inner extending portion (30b3) with the outer protuberance (30b1) protruding slightly outwards relative to the bent portion thereby to be spaced from the sidewall insulation panel (26, 27). an insulated cabinet formed into a box shape with an opening in a front and having a plurality of insulation panels (25, 26, 27, 28, 29) comprising a vacuum insulation panel between outer plates (30A, 30B, 30C, 30D, 30E) constituting an external surface and inner plates (31A, 31B, 31C, 31D) constituting an interior surface; vertical reinforcing members provided on opening side edges of right and left sidewall insulation panels constituting the insulated cabinet respectively, wherein the right and left sidewall insulation panels include the outer plates (30B, 30C) having bent portions which are located in front of the vacuum insulation panels and spaced from the vacuum insulation panels opening side ends of the right and left sidewall insulation panels are bent to the interior side to form the bent portions; and the vertical reinforcing members are provided along sidewall insulation panel side surfaces of the bent portions respectively, an upper reinforcing member includes a middle plate having two ends, a right plate and a left plate; characterized by the right plate and the left plate dropping perpendicularly from the ends of the middle plate respectively; wherein the right and left plates (52c, 52b) are inserted into fronts of right and left sidewall insulation panels (26, 27) from the above, in contact with an inner surface of the vertical reinforcement member respectively, and fixed to a front edge of a ceiling wall insulation panel; the vertical reinforcing members include an outer plate, a middle plate and an inner plate and have an open rear thereby to be formed into the shape of a groove and wherein the bent portions include an outer protuberance (30b1), a middle portion (30b2) and an inner extending portion (30b3) with the outer protuberance (30b1) protruding slightly outwards relative to the bent portion thereby to be spaced from the sidewall insulation panel (26, 27).