Disclosed is a biological information detection apparatus capable of restricting influence of external noise signals and suffering less detection omission and detection errors of biological signals. The biological information detection apparatus includes a plurality of detection units disposed on a support supporting a living body and configured to output signals corresponding to vibrations, a first extraction unit for extracting a signal in a first predetermined frequency range corresponding to a biological signal from the signal outputted from each detection unit, a second extraction unit for extracting a signal in a second predetermined frequency range as an external noise component from the signal outputted from each detection unit, a calculation unit for calculating an intensity value ratio between the signal in the first predetermined frequency range and the signal in the second predetermined frequency range, and a selection unit for selecting one or more from the plurality of detection units based on result of comparison between/among the intensity value ratios calculated by the calculation unit for the signals outputted from the respective detection units.
