A navigation apparatus for guiding a moving body from a current location to a destination using a communication base station includes a current location detection device for detecting a current location of the moving body and outputting current location information; a sending device for sending the current location information and destination information to the communication base station; a receiving device for receiving guiding information, which is required to guide the moving body from the current location to the destination and includes information representing a location of a guiding point and a navigation message corresponding to the guiding point, from the communication base station; a memory device for storing the guiding information; and a voice processing device for outputting the navigation message in voice format, based on the current location information and the information representing the location of the guiding point which is included in the guiding information.