A television device, comprising: an SOC chip provided with USB D+/D- differential terminals for inputting or outputting a USB D+/D- signal and electrically connected to USB D+/D- differential terminals provided by a switch module to form a selectable first channel; a C interface master control module provided with USB D+/D- differential terminals for inputting the USB D+/D- signal or outputting a billboard signal and electrically connected to the USB D+/D- differential terminals provided by the switch module to form a selectable second channel; and a USB Type-C interface provided with USB D+/D- differential terminals for inputting or outputting the USB D+/D- signal and electrically connected to the USB D+/D- differential terminals provided by the switch module; wherein the C interface master control module is further provided with a control signal output pin for outputting a first control signal or a second control signal and electrically connected to a control signal input pin of the switch module; and the first control signal is configured to turn on the first channel and turn off the second channel, and the second control signal is configured to turn on the second channel and turn off the first channel; the television device further comprises a multiplexing switch; the SOC chip is further provided with USB SSTX/RX differential terminals for inputting or outputting a USB3.0 signal and electrically connected to USB SSTX/RX differential terminals of the multiplexing switch to form a third channel, the SOC chip is further provided with an HDMI differential terminal for receiving or transmitting an HDMI signal; the HDMI differential terminal is electrically connected to an HDMI differential terminal of the multiplexing switch to form a selectable fourth channel. an SOC chip provided with USB D+/D- differential terminals for inputting or outputting a USB D+/D- signal and electrically connected to USB D+/D- differential terminals provided by a switch module to form a selectable first channel; a C interface master control module provided with USB D+/D- differential terminals for inputting the USB D+/D- signal or outputting a billboard signal and electrically connected to the USB D+/D- differential terminals provided by the switch module to form a selectable second channel; and a USB Type-C interface provided with USB D+/D- differential terminals for inputting or outputting the USB D+/D- signal and electrically connected to the USB D+/D- differential terminals provided by the switch module; wherein the C interface master control module is further provided with a control signal output pin for outputting a first control signal or a second control signal and electrically connected to a control signal input pin of the switch module; and the first control signal is configured to turn on the first channel and turn off the second channel, and the second control signal is configured to turn on the second channel and turn off the first channel; the television device further comprises a multiplexing switch; the SOC chip is further provided with USB SSTX/RX differential terminals for inputting or outputting a USB3.0 signal and electrically connected to USB SSTX/RX differential terminals of the multiplexing switch to form a third channel, the SOC chip is further provided with an HDMI differential terminal for receiving or transmitting an HDMI signal; the HDMI differential terminal is electrically connected to an HDMI differential terminal of the multiplexing switch to form a selectable fourth channel.