A cooking appliance, comprising: a main body provided therein with a cooking space; a rack formed on a lateral wall of the cooking space; a door configured to open and close the cooking space; and a storage vessel which is held in the rack and in which a food item is placed the storage vessel, comprising: a first piece having a plurality of removing holes formed in a portion, in which a food item is placed, in transverse and vertical directions, and at least one bent portion on an edge thereof; a second piece on which the first piece is mounted, and which has a bent portion at a position corresponding to the bent portion of the first piece; and an insulating member made of an electrically insulating material, disposed on the edge of the first piece, and disposed between the first piece and the second piece; the first piece comprises: a first bottom part having the removing holes; a first bent part disposed on an edge of the first bottom part, bent from the first bottom part and formed at a slant with respect to the first bottom part; a second bent part bent from the first bottom part and disposed in parallel with the first bottom part; characterized in that the first piece comprises a third bent part bent from the second bent part and disposed across the first bottom part, and the insulating member is mounted onto the second bent part and the th bent part. a main body provided therein with a cooking space; a rack formed on a lateral wall of the cooking space; a door configured to open and close the cooking space; and a storage vessel which is held in the rack and in which a food item is placed the storage vessel, comprising: a first piece having a plurality of removing holes formed in a portion, in which a food item is placed, in transverse and vertical directions, and at least one bent portion on an edge thereof; a second piece on which the first piece is mounted, and which has a bent portion at a position corresponding to the bent portion of the first piece; and an insulating member made of an electrically insulating material, disposed on the edge of the first piece, and disposed between the first piece and the second piece; the first piece comprises: a first bottom part having the removing holes; a first bent part disposed on an edge of the first bottom part, bent from the first bottom part and formed at a slant with respect to the first bottom part; a second bent part bent from the first bottom part and disposed in parallel with the first bottom part; characterized in that the first piece comprises a third bent part bent from the second bent part and disposed across the first bottom part, and the insulating member is mounted onto the second bent part and the th bent part. a first piece having a plurality of removing holes formed in a portion, in which a food item is placed, in transverse and vertical directions, and at least one bent portion on an edge thereof; a second piece on which the first piece is mounted, and which has a bent portion at a position corresponding to the bent portion of the first piece; and an insulating member made of an electrically insulating material, disposed on the edge of the first piece, and disposed between the first piece and the second piece; the first piece comprises: a first bottom part having the removing holes; a first bent part disposed on an edge of the first bottom part, bent from the first bottom part and formed at a slant with respect to the first bottom part; a second bent part bent from the first bottom part and disposed in parallel with the first bottom part; characterized in that the first piece comprises a third bent part bent from the second bent part and disposed across the first bottom part, and the insulating member is mounted onto the second bent part and the th bent part. a first bottom part having the removing holes; a first bent part disposed on an edge of the first bottom part, bent from the first bottom part and formed at a slant with respect to the first bottom part; a second bent part bent from the first bottom part and disposed in parallel with the first bottom part; characterized in that the first piece comprises a third bent part bent from the second bent part and disposed across the first bottom part, and the insulating member is mounted onto the second bent part and the th bent part.