A bioacoustic sound testing device includes a band power calculator that calculates a band power in a predetermined period for each of a plurality of predetermined frequency bands on the basis of a bioacoustic sound, a reference power calculator that calculates a respiratory airflow reflecting power on the basis of a band power of a band reflecting a respiratory airflow, calculates a specific change reflecting power on the basis of a band power of a band reflecting a specific change in a living body, and calculates a reference power on the basis of the respiratory airflow reflecting power and the specific change reflecting power, and an index value calculator that calculates at least one index value on the basis of the reference power and the band powers of the plurality of predetermined frequency bands.
