A method of displaying program-related information while the user views a program video mainly and a broadcasting program displaying device to implement the method without making the user's operation complicated and confusing. A picture plane is constructed by two picture planes having a television picture plane (picture plane 1) for displaying the program video which is outputted from a broadcasting program displaying device and further a property state picture plane as another picture plane (picture plane 2). The program video is displayed to the picture plane 1 and an operation picture plane of the broadcasting program displaying device and the program related-information are displayed to the picture plane 2. A broadcasting program displaying device for two-screen construction has functions for display, recording, replay, reservation recording, and the like in response to an instruction from a device which the user operates.