An arterial-pulse-wave detecting apparatus, including a plurality of pulse-wave detecting devices which are adapted to be worn on a plurality of portions of a living subject, respectively, and detect respective pulse waves that are produced in synchronism with each other from respective arteries of the plurality of portions of the subject, a memory device which stores the respective pulse waves produced in synchronism with each other and detected by the plurality of pulse-wave detecting devices, and a pulse-wave-display control device for controlling a display device to display the respective pulse waves produced in synchronism with each other and stored by the memory device, such that the respective pulse waves are superposed on each other.