The present invention provides a wireless IC card having a wireless IC chip mounted thereon and including a metal body, comprising: an IC chip accommodating portion having an opening formed in the metal body and provided to accommodate the wireless IC chip; a slit portion cut from one side of the IC chip accommodating portion toward the outer edge of the metal body; and an antenna formed on the lower surface of the metal body and electrically connected to the wireless IC chip, wherein the antenna includes the metal body and includes one or more antenna patterns wound around the IC chip accommodating portion, wherein one end of a first pattern is electrically connected to a first bonding position of the metal body adjacent to the slit portion by a preset first distance, and the one or more antenna patterns extend in a direction continuous with the winding direction of the antenna, and the first bonding position is a preset position provided such that at least a portion of the metal body provided with the slit portion constitutes the turns of the first pattern.