The invention provides a device, a method and a terminal for broadcast switching. The device is used for switching terminal broadcast modes, and the broadcast switching device comprises a second signal broadcast unit, a first signal broadcast unit, a signal receiving module, an analysis module, a judging module and a switching module. The signal receiving module is respectively connected with the first signal broadcast unit and the second signal broadcast unit, and is used for receiving a first signal and a second signal and preferentially receiving the first signal. The analysis module is connected with the signal receiving module and is used for analyzing the first signal to get intensity information of the first signal. The judging module is connected with the analysis module and is used for comparing the intensity information with preset broadcast intensity to get a judging result. The switching module is connected with the judging module and the signal reception module, and is used for controlling the signal reception module to receive the second signal when the judging result is that the intensity information can't meet the requirement of the preset broadcast intensity. According to the technical scheme, when digital broadcasting signal intensity can't meet the requirement of broadcasting, the broadcast switching device can be switched to FM (frequency modulation) broadcasting and optimal hearing experience is brought to users.