A signal transceiving apparatus, characterized by comprising: a first communication module and a second communication module; a first switch connected to a first terminal of the first communication module and a first terminal of the second communication module, respectively; a second switch connected to a second terminal of the first communication module, a first antenna structure connected to the second switch; a third switch connected to a second terminal of the second communication module, and a second antenna structure connected to the third switch; wherein the first switch, the second switch, and the third switch are all double-pole-double-throw switches; wherein the signal transceiving apparatus further comprises: a modem; a first terminal of the first switch is connected to a first port and a second port of the modem; a second terminal of the first switch is connected to a first transmitting port of the first communication module and a second transmitting port of the second communication module; and the first communication module is configured to form a first transmitting path and two receiving paths with the modem, the first switch, the second switch and the first antenna structure, the second communication module is configured to form a second transmitting path and two receiving paths with the modem, the first switch, the third switch and the second antenna structure; in a case of signal transmission, at least one of the first transmitting path and the second transmitting path is in a conductive state, and in a case of signal reception, the two receiving paths corresponding to the first communication module and the two receiving paths corresponding to the second communication module are all in a conductive state. a first communication module and a second communication module; a first switch connected to a first terminal of the first communication module and a first terminal of the second communication module, respectively; a second switch connected to a second terminal of the first communication module, a first antenna structure connected to the second switch; a third switch connected to a second terminal of the second communication module, and a second antenna structure connected to the third switch; wherein the first switch, the second switch, and the third switch are all double-pole-double-throw switches; wherein the signal transceiving apparatus further comprises: a modem; a first terminal of the first switch is connected to a first port and a second port of the modem; a second terminal of the first switch is connected to a first transmitting port of the first communication module and a second transmitting port of the second communication module; and the first communication module is configured to form a first transmitting path and two receiving paths with the modem, the first switch, the second switch and the first antenna structure, the second communication module is configured to form a second transmitting path and two receiving paths with the modem, the first switch, the third switch and the second antenna structure; in a case of signal transmission, at least one of the first transmitting path and the second transmitting path is in a conductive state, and in a case of signal reception, the two receiving paths corresponding to the first communication module and the two receiving paths corresponding to the second communication module are all in a conductive state.