Abstract: A method for testing hearing ability by which a patient can test his hearing ability any time and any place without spending time on visiting the hospital and making reservation and preparing expensive equipments for a self-test, is provided. When the method for testing the hearing ability is selected by a tested person connected by the Internet, sounds having different volumes of a predetermined frequency bandwidth are sequentially reproduced according to the selected hearing ability testing method. The average threshold value and the hearing hardness grade of the tested person are calculated and displayed according to the response of the tested person for the reproduced sounds. A hearing ability test is divided into a test in a low band, a test in a conversation band, and a test in a high band, respectively. The hearing ability test in the conversation band is divided into a continuous test and a test performed, while looking at a screen.