The invention relates to a radio-frequency antenna comprising an antenna coil, an antenna matching module and a metal layer. The antenna coil is used for transmitting or receiving electromagnetic wave signals. The antenna matching module is connected with the antenna coil and used for transmitting or receiving electric signals. The relative position of the metal layer and the antenna coil is fixed, and the metal layer and the antenna coil are mutually insulated. The metal layer is used for shielding the electromagnetic wave signals transmitted to the outside by the antenna coil or receiving the electromagnetic wave signals from the outside. The metal layer is provided with a signal channel arranged between the antenna coil and the outside. The antenna coil transmits or receives the electromagnetic wave signals via the signal channel. According to the radio-frequency antenna, influence of external metal on the antenna coil is shielded by the metal layer so that anti-metal performance of the radio-frequency antenna can be enhanced; the antenna coil can transmit or receive the electromagnetic wave signals of the specific direction via the signal channel so that influence of external interference signals on the radio-frequency antenna can be avoided; besides, the outer edge of the electromagnetic wave signals transmitted by the radio-frequency antenna can be controlled, and the problem of coherent jamming and the phenomenon of crosstalk are not generated when multiple radio-frequency antennas are used.