Information guidance service system

An information guidance service system according to the present invention provides a user terminal (1) with information on a facility in use. The information guidance service system includes the user terminal (1) having a push-to-talk over cellular (PoC) function of performing a transceiver-mode communications; a PoC server (2) which controls the transceiver-mode communications with the PoC function to relay between the user terminal and an information guidance providing device (3); and the information guidance providing device (3) for providing the information on the facility in use to the user terminal (1). The information guidance providing device (3) includes a control circuit (31) that controls to communicate with the user terminal via the PoC server (2) and notify the user terminal of the information on the facility in use as a voice signal.