Abstract: This invention relates to an audience state measuring apparatus of a television including an existence sensor (2) for detecting the number of persons (3) near a television receiver (1), a setter (4) for registering who is or are watching the program which is being broadcasted and an alarm lamp (6) for reporting that the number of persons from the existence sensor (2) and the registered number from the setter are inconsistent. This apparatus makes it possible to dertimine who among one family is or are watching the specific program which is being broadcasted and to measure accurately the individual audience state because non-registration in the setter (4) is reported to the persons (3).