A pulse wave propagation time measurement device comprising: an electrocardiographic sensor that has an electrocardiographic electrode and that is configured to detect an electrocardiographic signal; a photoelectric pulse wave sensor that has a light-emitting element and a light-receiving element and that is configured to detect a photoelectric pulse wave signal; a first signal processing means configured to perform a signal process including filtering processing on the electrocardiographic signal detected by the electrocardiographic sensor ; a second signal processing means configured to perform a signal process including filtering processing on the photoelectric pulse wave signal detected by the photoelectric pulse wave sensor ; a peak detecting means configured to detect a peak of the electrocardiographic signal on which the signal process has been performed by the first signal processing means and a peak of the photoelectric pulse wave signal on which the signal process has been performed by the second signal processing means ; a delay time obtaining means configured to obtain in every pulse a delay time of the electrocardiographic signal peak in the first signal processing means and/or a delay time of the photoelectric pulse wave signal peak in the second signal processing means ; a correcting means configured to correct in every pulse the peak of the electrocardiographic signal detected by the peak detecting means and/or the peak of the photoelectric pulse wave signal detected by the peak detecting means based on the delay time of the electrocardiographic signal peak obtained by the delay time obtaining means and/or the delay time of the photoelectric pulse wave signal peak obtained by the delay time obtaining means ; and a calculating means configured to obtain a pulse wave propagation time from a time difference between the peak of the photoelectric pulse wave signal and the peak of the electrocardiographic signal which have been corrected by the correcting means . an electrocardiographic sensor that has an electrocardiographic electrode and that is configured to detect an electrocardiographic signal; a photoelectric pulse wave sensor that has a light-emitting element and a light-receiving element and that is configured to detect a photoelectric pulse wave signal; a first signal processing means configured to perform a signal process including filtering processing on the electrocardiographic signal detected by the electrocardiographic sensor ; a second signal processing means configured to perform a signal process including filtering processing on the photoelectric pulse wave signal detected by the photoelectric pulse wave sensor ; a peak detecting means configured to detect a peak of the electrocardiographic signal on which the signal process has been performed by the first signal processing means and a peak of the photoelectric pulse wave signal on which the signal process has been performed by the second signal processing means ; a delay time obtaining means configured to obtain in every pulse a delay time of the electrocardiographic signal peak in the first signal processing means and/or a delay time of the photoelectric pulse wave signal peak in the second signal processing means ; a correcting means configured to correct in every pulse the peak of the electrocardiographic signal detected by the peak detecting means and/or the peak of the photoelectric pulse wave signal detected by the peak detecting means based on the delay time of the electrocardiographic signal peak obtained by the delay time obtaining means and/or the delay time of the photoelectric pulse wave signal peak obtained by the delay time obtaining means ; and a calculating means configured to obtain a pulse wave propagation time from a time difference between the peak of the photoelectric pulse wave signal and the peak of the electrocardiographic signal which have been corrected by the correcting means . <EOS>