The exhalation measurement device of the present invention comprises a chamber (23), a measurement component (45), a piezoelectric pump (44), a first learning controller (100), and a second learning controller (110). The chamber (23) temporarily holds exhalation. The measurement component (45) measures a specific component in the exhalation. The piezoelectric pump (44) supplies the measurement component (45) with the exhalation held in the chamber (23). The first learning controller (100) performs operational setting on the piezoelectric pump (44) before the piezoelectric pump (44) supplies the exhalation in the chamber (23) to the measurement component (44). The second learning controller (110) performs operational setting on the piezoelectric pump (44) after the piezoelectric pump (44) has started supplying the exhalation in the chamber (23) to the measurement component (45), but before the measurement component (45) performs its measurement.
