PROBLEM TO BE SOLVED: To provide a biological signal processing device capable of comparably presenting a respiration related waveform and an electrocardiographic waveform and presenting them in independent time scales respectively, and a control method thereof.SOLUTION: The biological signal processing device outputs a report in which a respiration related waveform area 701 for representing a respiration related waveform, and an electrocardiographic waveform area 702 for representing an electrocardiographic waveform, are disposed. The respiration related waveform area 701 has a time reduction scale larger than that of the electrocardiographic waveform area 702, and the respiration related waveform area 701 and the electrocardiographic waveform area 702 correspond with each other at one point in a time axial direction at the same point in time.【課題】 呼吸関連波形と心電波形とを対比可能に、かつそれぞれに独立したタイムスケールで提示可能な生体信号処理装置およびその制御方法を提供する。【解決手段】 呼吸関連波形が示される呼吸関連波形領域７０１と、心電波形が示される心電波形領域７０２とが配置されたレポートを出力する。呼吸関連波形領域７０１は、心電波形領域７０２よりも時間の縮尺が大きく、呼吸関連波形領域７０１と心電波形領域７０２とは、時間軸方向の一点で同一時刻に対応する。【選択図】 図７
