Abstract: A chip card retaining mechanism includes a first holding frame, a second holding frame and a circuitry. The first holding frame includes a latching portion and a connecting board. The latching portion defines a first receiving room for receiving a first chip card. The second holding frame is attached to the connecting board of the first holding frame, and is perpendicular to the latching portion of the first holding frame. The second holding frame defines a second receiving room for receiving a second chip card. The circuitry is formed on the connecting board and the latching portion. The first chip card is electronically connected to the second chip card via the circuitry.