This application provides an identification method and device, and relates to the field of wearable devices. The method comprises: acquiring a first heartbeat propagation signal and a second heartbeat propagation signal separately from a target limb of a body； and identifying whether the target limb is a left limb or a right limb at least according to the first heartbeat propagation signal and the second heartbeat propagation signal. The method and device can implement automatic identification of left and right limbs, simplify configuration steps, and improve user experience.
