This application provides an orientation measurement method and a terminal device, to consider both auditory experience and an effective distance for measuring an orientation, and may be applied to a communication system. The method includes: A first terminal device receives and/or sends an acoustic wave signal on a first acoustic wave frequency band, to measure a relative orientation between the first terminal device and a second terminal device. The first terminal device obtains first information, where the first information includes first signal strength and distance information between the second terminal device and the first terminal device. The first terminal device determines a target acoustic wave frequency band based on the first information. The first terminal device switches, if the target acoustic wave frequency band is different from the first acoustic wave frequency band, to the target acoustic wave frequency band to continue receiving and/or sending the acoustic wave signal.

This application provides an orientation measurement method and a terminal device, to consider both auditory experience and an effective distance for measuring an orientation, and may be applied to a communication system. The method includes: A first terminal device receives and/or sends an acoustic wave signal on a first acoustic wave frequency band, to measure a relative orientation between the first terminal device and a second terminal device. The first terminal device obtains first information, where the first information includes first signal strength and distance information between the second terminal device and the first terminal device. The first terminal device determines a target acoustic wave frequency band based on the first information. The first terminal device switches, if the target acoustic wave frequency band is different from the first acoustic wave frequency band, to the target acoustic wave frequency band to continue receiving and/or sending the acoustic wave signal.