A biological information displaying apparatus comprising: a displaying section comprising a measurement display screen and an abnormality display screen, the measurement display screen displaying biological information under measurement, the abnormality display screen displaying information indicating that an abnormality of the biological information has occurred, and the biological information including a waveform at a timing when the abnormality occurs; and a display controlling section configured to control the displaying section, to display the abnormality display screen on the measurement display screen, based on a preset alarm condition, so that at least a part of the abnormality display screen is superimposed on the measurement display screen, wherein, in a case where the abnormality display screen is displayed on the displaying section, the display controlling section controls the displaying section so that, even when the abnormality resolves, the information indicating that the abnormality of the biological information has occurred, and the biological information including the waveform at the timing when the abnormality occurs are continued to be displayed on the abnormality display screen, and the display controlling section controls the displaying section so that the abnormality display screen is continued to be displayed until a confirmation process for the abnormality display screen is executed in response to an external operation; and the confirmation process includes an alarm confirmation process indicating that an alarm is confirmed, and a content confirmation process indicating that contents of the information indicating that the abnormality of the biological information has occurred and the biological information including the waveform at the timing when the abnormality occurs which are displayed on the abnormality display screen are confirmed. a displaying section comprising a measurement display screen and an abnormality display screen, the measurement display screen displaying biological information under measurement, the abnormality display screen displaying information indicating that an abnormality of the biological information has occurred, and the biological information including a waveform at a timing when the abnormality occurs; and a display controlling section configured to control the displaying section, to display the abnormality display screen on the measurement display screen, based on a preset alarm condition, so that at least a part of the abnormality display screen is superimposed on the measurement display screen, wherein, in a case where the abnormality display screen is displayed on the displaying section, the display controlling section controls the displaying section so that, even when the abnormality resolves, the information indicating that the abnormality of the biological information has occurred, and the biological information including the waveform at the timing when the abnormality occurs are continued to be displayed on the abnormality display screen, and the display controlling section controls the displaying section so that the abnormality display screen is continued to be displayed until a confirmation process for the abnormality display screen is executed in response to an external operation; and the confirmation process includes an alarm confirmation process indicating that an alarm is confirmed, and a content confirmation process indicating that contents of the information indicating that the abnormality of the biological information has occurred and the biological information including the waveform at the timing when the abnormality occurs which are displayed on the abnormality display screen are confirmed.