The present disclosure relates to a medium storage box and a financial device. A medium storage box according to an aspect comprises a case; a plurality of storage units which is provided in an inner space of the case; a plurality of medium separating and stacking devices which are disposed on each of the plurality of storage units and separate stacked media or transfer and stack media to each of storage units; an inner transport unit which is used for transferring a medium to the plurality of medium separating and stacking devices in the case; and a driving unit which transfers power to the plurality of medium separating and stacking devices and the inner transport unit. (Fig. 3)