Interface circuit supporting concurrent communication of multi-contact interface and intelligent card thereof

The utility model discloses an interface circuit supporting multi-contact interface concurrent communication and an intelligent card thereof, the interface circuit comprises a first contact interface board provided with a card seat and a first contact interface contact, the card seat is used for installing an interface concurrent test card, and the first contact interface contact is used for being in communication connection with a first terminal; the second contact type interface board is provided with a voltage conversion module and a second contact type interface contact, the output end of the voltage conversion module is electrically connected with the clamping seat, and the voltage conversion module is used for synchronously providing equivalent target voltage for the first contact type interface board and the second contact type interface board; the second contact type interface contact is used for being in communication connection with a second terminal. Compared with a scheme that multi-contact interf