A paper-currency dispensing box used for paper currency storage and separation and discharge of a financial self-service device. The paper-currency dispensing box is provided with a box body (1) consisting of an upper cover (11) and a bottom case (12), a paper-currency separating mechanism (5) disposed on an end portion of paper currency (07) for separating a whole stack of paper currency one by one, a paper-currency pressing mechanism (3) for pushing the whole stack of paper currency towards the paper-currency separating mechanism, and a limiting block (6) arranged to ensure single note separation of the whole stack of paper currency is performed, so that the end portion of the whole stack of paper currency forms an acute angle state when separating, characterized in that a paper-currency picking wheel (511) and a paper-currency separating wheel group (52) in the paper-currency separating mechanism (5) are provided with one-way bearings (512, 522), at least one guide rib (62) is arranged on the surface of the limiting block (6) along the stacking direction of the paper currency (07), and the height of the guide rib (62) reduces along the paper-currency discharge port direction.