Device and method for switching data transmission channel based on Type-C interface

The embodiment of the invention provides a device and a method for switching a data transmission channel based on a Type-C interface. The device comprises an uplink Type-C interface; a change-over switch used for outputting a first level signal or a second level signal; and a control module connected with the change-over switch and the uplink Type-C interface, and used for receiving four pairs of differential signals transmitted by the uplink Type-C interface, switching to a first communication mode when a first level signal transmitted by the change-over switch is received, and switching to a second communication mode when a second level signal transmitted by the change-over switch is received; a first communication mode refers to that two pairs of received four pairs of differential signals are converted into DisplayPort signals, and the other two pairs of received four pairs of differential signals are converted into USB3.0 signals; and a second communication mode refers to that the received four pairs of