Toutch and nou-toutch type working-mode changing-over method in double interface card

The present invention discloses a change-over method of contact type and non-contact type working mode of double-interface card, and is aimed at providing a method capable of implementing seamless transient change-over of contact type and non-contact type working mode in double-interface card. In said invention the default state of system is non-contact type working mode, and the priority of contact type working mode is higher than that of non-contact type working mode; when the contact type active information and non=contact type active information are simultaneously appeared, the contact type working node is activated, and the non-contact type working mode is shielded; the non-contact type working mode when which is activated or retained can be interrupted by contact type working mode, and the contact type working mode when which is activated or retained can not be interrupted by non-contact type working mode. Said invention is applicable to the field of intelligent card.