It is an object of the present invention to provide an electronic program guide system and an electronic program guide displaying method that allow a desired program to be selected in a short time and at a high degree of reliability. EPG data of programs received by an IRD 4 through a satellite and EPG data of programs transmitted as a ground wave and received by a TV receiver 5 are converted into EPG data with an integrated format by an EPG receiver 6. The integrated EPG data is then output and displayed to the TV receiver 5.