The invention discloses a traffic card with a value guarantee function, in particular relates to the field of traffic cards. The traffic card comprises a value guarantee carrier, an electronic tag system is arranged in the value guarantee carrier and comprises an antenna coil, and the antenna coil is composed of a wire turn and a connecting piece. The SATA interfaces are arranged at two ends of the connecting piece, and SATA sockets are arranged at two ends of the wire turn. According to the invention, the value guarantee carrier and the electronic tag system are combined, the wire turn and the connecting piece are matched through the SATA interfaces and the SATA sockets, so that the antenna coil and an IC chip form a closed circuit, the wire turn is convenient to replace, the size of theelectronic tag system is adjusted to adapt to the size of the value guarantee carrier, or the electronic tag system is attached to the outer side of the value guarantee carrier through an attaching film, and accordingly the unification of the value guarantee function and the using function is facilitated, a user purchases the electronic tag system to independently select the value guarantee carrier, the coordination is convenient, the user's intention is met, and the popularization is convenient.