A refrigerator having an ice-making device, comprising: a main body having a storage space; a door for selectively opening or closing the storage space; a pair of support steps protruding rearward from both side ends of a backside of the door by a predetermined length and formed to be elongated in an up and down direction; a seating step formed to be elongated in a left and right direction in such a manner that a portion of the backside of the door between the support steps protrudes rearward by a predetermined length; a dispenser provided on the door; an ice maker for making ice, the ice maker being provided on the backside of the door for selectively opening or closing the storage space; an ice bank detachably installed on the backside of the door below the ice maker so as to store ice made in the ice maker, the ice bank having: an ice-releasing means for transferring the ice to the dispenser; and an ice-crushing means for crushing the ice; a seating member installed in a space that is defined by the backside of the door, the pair of support steps, and the seating step, the seating member having an installation space in which the ice maker and the ice bank are installed; a driving connector provided at one side of the backside of the door and rotated by a driving means for providing a driving force for use in operating the ice-releasing means and the ice-crushing means; and an interlocking connector provided at one side of a backside of the ice bank and rotated in cooperation with the rotation of the driving connector so as to transmit the driving force of the driving means to the ice-releasing means and the ice-crushing means, wherein a pair of interlocking protrusions protruding from the backside of the door are provided on the driving connector, and a pair of interlocking ribs respectively engaged with the interlocking protrusions are provided on the interlocking connector, whereby upon rotation of the driving connector, the interlocking connector is rotated by the interlocking protrusions and the interlocking ribs that are engaged with each other, wherein the driving means is a driving motor installed between the backside of the door and the seating member, and provides driving force for use in feeding and crushing the ice stored in the ice bank, wherein the driving connector and the interlocking connector are rotatably installed in installation recesses formed at one side of a front side of the installation space and a rear side of the ice bank. a main body having a storage space; a door for selectively opening or closing the storage space; a pair of support steps protruding rearward from both side ends of a backside of the door by a predetermined length and formed to be elongated in an up and down direction; a seating step formed to be elongated in a left and right direction in such a manner that a portion of the backside of the door between the support steps protrudes rearward by a predetermined length; a dispenser provided on the door; an ice maker for making ice, the ice maker being provided on the backside of the door for selectively opening or closing the storage space; an ice bank detachably installed on the backside of the door below the ice maker so as to store ice made in the ice maker, the ice bank having: an ice-releasing means for transferring the ice to the dispenser; and an ice-crushing means for crushing the ice; an ice-releasing means for transferring the ice to the dispenser; and an ice-crushing means for crushing the ice; a seating member installed in a space that is defined by the backside of the door, the pair of support steps, and the seating step, the seating member having an installation space in which the ice maker and the ice bank are installed; a driving connector provided at one side of the backside of the door and rotated by a driving means for providing a driving force for use in operating the ice-releasing means and the ice-crushing means; and an interlocking connector provided at one side of a backside of the ice bank and rotated in cooperation with the rotation of the driving connector so as to transmit the driving force of the driving means to the ice-releasing means and the ice-crushing means, wherein a pair of interlocking protrusions protruding from the backside of the door are provided on the driving connector, and a pair of interlocking ribs respectively engaged with the interlocking protrusions are provided on the interlocking connector, whereby upon rotation of the driving connector, the interlocking connector is rotated by the interlocking protrusions and the interlocking ribs that are engaged with each other, wherein the driving means is a driving motor installed between the backside of the door and the seating member, and provides driving force for use in feeding and crushing the ice stored in the ice bank, wherein the driving connector and the interlocking connector are rotatably installed in installation recesses formed at one side of a front side of the installation space and a rear side of the ice bank.