PROBLEM TO BE SOLVED: To provide a biological information recorder, with which the relation of both respiration information and electrocardiogram information can be easily grasped while making the information significant for diagnosis. SOLUTION: In this biological information recorder, the respiration information containing a respiratory waveform or number of times of respiration and arterial blood oxygen saturation degree at least and the electrocardiogram information containing an electrocardiogram waveform or information provided by analyzing this electrocardiogram waveform, which are simultaneously acquired from the same subject, are outputted on the same page while being made correspondent on the same time base.
