The invention provides a voice service switching method and apparatus, and a mobile terminal. The voice service switching method comprises the following steps: obtaining voice quality information whena terminal performs a wireless call in a wireless call mode of a first network and cell information of a second network in an area where the terminal is located; and when the voice quality information is lower than a preset value, switching from the wireless call mode of the first network to perform the voice call in the cell of the second network according to the cell information of the second network. In the embodiment of the invention, by obtaining the voice quality information, the wireless call performed in the wireless call mode is switched to the voice call, smooth and seamless switching can be achieved, and the user experience is improved.