A biological information displaying apparatus includes an analyzing unit and a display unit. The analyzing unit analyzes measured continuous biological information waveforms to detect abnormal biological information waveforms. The display unit simultaneously displays a first waveform group consisting of continuous biological information waveforms including an abnormal biological information waveform which is produced initially in abnormal biological information waveforms that are produced in a duration when the abnormal biological information waveforms detected by the analyzing unit are continued and a biological information waveform which is produced just before the production of the initial abnormal biological information waveform, and a second waveform group consisting of continuous biological information waveforms including an abnormal biological information waveform which is last produced and a biological information waveform which is produced just after the production of the last abnormal biological information waveform.