A mixed coin sorting device is provided; a coil conveying funnel, a conveyer belt, a driving pulley, a driven pulley, a coin flattening roller, a coil rectifying splitting plate, an arc turning baffle, a coin overturn selection slide way, and a coil collection hopper are arranged in a box body; the coil conveying funnel, the coin flattening roller, and the coil rectifying splitting plate are arranged on the upper portion of the box body; the coil conveying funnel and the coil rectifying splitting plate are respectively arranged on two sides of the coin flattening roller; the conveyer belt is arranged below the coil conveying funnel, the coin flattening roller, and the coil rectifying splitting plate; two ends of the conveyer belt are respectively sleeved on the driving pulley and the driven pulley; a coil flattening gap is arranged between the coil flattening roller and the conveyer belt; the end portion of the conveyer belt is provided with the arc turning baffle; the coin overturn selection slide way is arranged below the conveyer belt; the coil rectifying splitting plate is connected with the coin overturn selection slide way through the arc turning baffle; the coil collection hopper is arranged below the coin overturn selection slide way. The mixed coil sorting device can sort coils of wall face values with high efficiency.