A fetal movement information processing device and method for accurately grasping and predicting the healthy development state of a fetus, namely, the well-being state of the fetus by adequately detecting and recording information on the fetal movement of a pregnant woman. The fetal movement information processing device comprises detected information storage means (20) for storing fetal movement detection signal detected by a fetal movement sensor (11) and detection day information associated with the fetal movement detection signal, pregnancy number-of-elapsed-days calculating means (38) for calculating the number of elapsed days from the fetal movement detection signals, fetal movement amount measuring means (54) for measuring the fetal movement amount per unit time from fetal movement signals read out from the detected information storage means, and displaying/outputting means (60) for displaying the fetal movement amounts acquired by the fetal movement amount measuring means and arranged in order of week of pregnancy.