An acoustic wave measuring apparatus including a holding member pressed against a subject, a probe that has an acoustic wave conversion unit for receiving an acoustic wave emitted from the subject through the holding member to convert into an electric signal, a seal member that is provided on the probe so as to enclose a periphery of the acoustic wave conversion unit, and that forms a space between the holding member and the acoustic wave conversion unit, a providing unit that provides water into the space, and a removing member that is arranged between the providing unit and the probe, and removes dust mixed in the water.