A method and a system for testing an authentication server. The method comprises: installing a certificate of an authentication server to be tested in a monitor console and installing a certificate of the monitor console in the authentication server to be tested; constructing and sending, by the monitor console, based on a configuration type of the authentication server to be tested, according to a roaming authentication protocol, roaming authentication protocol data to the authentication server to be tested; capturing response data sent by the authentication server to be tested, and performing comparative analysis to determine whether field information in the response data is consistent with locally stored respective information; and displaying that the authentication server to be tested is tested successfully in a case that the field information in the response data is completely consistent with the locally stored respective information; otherwise, displaying comparative analysis information.