The RFID TAG includes a conducting antenna affixed to the surface of the substrate. And, wireless telecommunication IC is electrically linked to antenna. The antenna is provided with a conductor plane and a conductor pressing section, such that wireless telecommunication IC can be electrically linked between conductor plane and conductor pressing section. The area of conductor plane of antenna is bigger than that of conductor pressing section, whereas linear pins are mounted at both sides of wireless telecommunication IC, which is electrically linked to the conductor plane and conductor pressing section by a metal welding, thereby achieving a miniaturized RFID TAG with ease of manufacturing and cost effectiveness.