A refrigerator comprising: an inner casing; an outer casing which covers the inner casing; a vacuum insulation panel provided in a space between the inner casing and the outer casing and disposed on at least one surface of the outer casing; and a foam material formed by foaming in the space between the inner casing and the outer casing, wherein the vacuum insulation panel comprises: a core material which comprises a first surface attached to the at least one surface of the outer casing; and an envelope material which surrounds a second surface provided opposite the first surface and side surfaces (113") to cover the core material, wherein the foam material foams in a space between the vacuum insulation panel and the inner casing to have a thickness of 5 mm to 10 mm, wherein an adhesive layer is provided between the at least one surface of the outer casing and the first surface of the core material, and the core material comes into contact with the at least one surface of the outer casing through the adhesive layer, wherein a peripheral portion of the envelope material, which surrounds all of the second surface and the side surfaces (113") of the core material and is disposed outside the core material, is attached to the adhesive layer, wherein a plurality of wrinkles (125a, 125b) introduced inward from the envelope material are provided in an area which covers the side surfaces (113") of the core material from the peripheral portion of the envelope material, wherein the side surfaces (113") of the core material also comprise a plurality of wrinkles introduced inward from the core material, and the plurality of the wrinkles (125a, 125b) provided at the envelope material are provided in a shape corresponding to the plurality of the wrinkles provided at the side surfaces (113") of the core material. an inner casing; an outer casing which covers the inner casing; a vacuum insulation panel provided in a space between the inner casing and the outer casing and disposed on at least one surface of the outer casing; and a foam material formed by foaming in the space between the inner casing and the outer casing, wherein the vacuum insulation panel comprises: a core material which comprises a first surface attached to the at least one surface of the outer casing; and an envelope material which surrounds a second surface provided opposite the first surface and side surfaces (113") to cover the core material, wherein the foam material foams in a space between the vacuum insulation panel and the inner casing to have a thickness of 5 mm to 10 mm, wherein an adhesive layer is provided between the at least one surface of the outer casing and the first surface of the core material, and the core material comes into contact with the at least one surface of the outer casing through the adhesive layer, wherein a peripheral portion of the envelope material, which surrounds all of the second surface and the side surfaces (113") of the core material and is disposed outside the core material, is attached to the adhesive layer, wherein a plurality of wrinkles (125a, 125b) introduced inward from the envelope material are provided in an area which covers the side surfaces (113") of the core material from the peripheral portion of the envelope material, wherein the side surfaces (113") of the core material also comprise a plurality of wrinkles introduced inward from the core material, and the plurality of the wrinkles (125a, 125b) provided at the envelope material are provided in a shape corresponding to the plurality of the wrinkles provided at the side surfaces (113") of the core material. a core material which comprises a first surface attached to the at least one surface of the outer casing; and an envelope material which surrounds a second surface provided opposite the first surface and side surfaces (113") to cover the core material, wherein the foam material foams in a space between the vacuum insulation panel and the inner casing to have a thickness of 5 mm to 10 mm, wherein an adhesive layer is provided between the at least one surface of the outer casing and the first surface of the core material, and the core material comes into contact with the at least one surface of the outer casing through the adhesive layer, wherein a peripheral portion of the envelope material, which surrounds all of the second surface and the side surfaces (113") of the core material and is disposed outside the core material, is attached to the adhesive layer, wherein a plurality of wrinkles (125a, 125b) introduced inward from the envelope material are provided in an area which covers the side surfaces (113") of the core material from the peripheral portion of the envelope material, wherein the side surfaces (113") of the core material also comprise a plurality of wrinkles introduced inward from the core material, and the plurality of the wrinkles (125a, 125b) provided at the envelope material are provided in a shape corresponding to the plurality of the wrinkles provided at the side surfaces (113") of the core material.