A coin storage device capable of preventing jamming of coins in the storage compartments is disclosed. The coin storage device includes: storage compartments that store therein coins by denomination;and screw-type conveying members, installed for the respective storage compartments, each of the screw-type conveying members including a shaft having an elongated shape and having an outer circumferential surface provided with a blade portion that protrudes radially outwards in a spiraling shape, and conveying coins toward a front side by being rotated in one direction about a central axis of theshaft. Further, each of the screw-type conveying members includes an actuating portion to move center of gravity of coins accumulated on the actuating portion up and down periodically as the screw-type conveying member is rotated about the central axis of the shaft.