The present invention relates to an ice-making device for a refrigerator. The present invention provides an ice-making device for a refrigerator including a main body (100) having a storage space and a door (131) selectively opening or closing the storage space. The ice-making device comprises an ice maker (161) installed on a backside of the door and making ice; a cold air duct (141) provided in one side of the storage space and supplying the ice maker with a portion of cold air supplied to the storage space; an ice maker cover (171) detachably installed on the backside of the door to selectively open or close the ice maker; and an ice bank (181) 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.