A refrigerator having an ice-making device, the refrigerator including: a main body having a storage space; and a door selectively opening or closing the storage space, the door including a pair of support steps and a seating step, the ice-making device comprising: an ice maker for making ice; and an ice bank detachably installed on the backside of the door below the ice maker, the ice bank storing ice made in the ice maker and transferring it to a dispenser provided on the door; a seating member installed in a space, which is defined by the backside of the door, side surfaces of the pair of support steps facing each other and the seating step, the support steps being formed to protrude rearward from both side ends of the backside of the door and to extend vertically, the seating step being formed to extend from side to side in such a manner that a portion of the backside of the door between the support steps protrudes rearward by a predetermined length, the seating member being provided with an installation space in which the ice maker and the ice bank are installed; at least one catching recess formed in an underside of the ice bank; at least one catching protrusion provided on a bottom side of the installation space; the at least one catching protrusion being inserted in the catching recess, when the ice bank is installed. a main body having a storage space; and a door selectively opening or closing the storage space, the door including a pair of support steps and a seating step, the ice-making device comprising: an ice maker for making ice; and an ice bank detachably installed on the backside of the door below the ice maker, the ice bank storing ice made in the ice maker and transferring it to a dispenser provided on the door; a seating member installed in a space, which is defined by the backside of the door, side surfaces of the pair of support steps facing each other and the seating step, the support steps being formed to protrude rearward from both side ends of the backside of the door and to extend vertically, the seating step being formed to extend from side to side in such a manner that a portion of the backside of the door between the support steps protrudes rearward by a predetermined length, the seating member being provided with an installation space in which the ice maker and the ice bank are installed; at least one catching recess formed in an underside of the ice bank; at least one catching protrusion provided on a bottom side of the installation space; the at least one catching protrusion being inserted in the catching recess, when the ice bank is installed. an ice maker for making ice; and an ice bank detachably installed on the backside of the door below the ice maker, the ice bank storing ice made in the ice maker and transferring it to a dispenser provided on the door; a seating member installed in a space, which is defined by the backside of the door, side surfaces of the pair of support steps facing each other and the seating step, the support steps being formed to protrude rearward from both side ends of the backside of the door and to extend vertically, the seating step being formed to extend from side to side in such a manner that a portion of the backside of the door between the support steps protrudes rearward by a predetermined length, the seating member being provided with an installation space in which the ice maker and the ice bank are installed; at least one catching recess formed in an underside of the ice bank; at least one catching protrusion provided on a bottom side of the installation space; the at least one catching protrusion being inserted in the catching recess, when the ice bank is installed.