The present invention relates to a refrigerator having a structure of a receptacle apparatus, which enables efficient utilization of a space for storing an object to be refrigerated or an object to be frozen, and a door or a cover which is for opening or closing the receptacle apparatus. Provided is a refrigerator, according to an embodiment of the present invention, comprising: a first storage chamber provided above a cabinet; a second storage chamber positioned below the first storage chamber; a partition wall which is for partitioning the first storage chamber and second storage chamber vertically and of which the upper surface maintains a level position; an accommodation unit recessed downward from the upper side of the partition wall, forming a receptacle space and having an input port, into which an object to be stored is input, formed on the upper part thereof; an accommodation unit door provided so as to be movable in the direction parallel to the upper side of the partition wall and for selectively opening or closing the input port; and a position fixing unit provided on the rear of the accommodation unit door and for restraining the movement of the door when the accommodation unit door moves backward and opens the input port.