Bioelectrical impedance measuring device

(57) [Summary] [PROBLEMS] To accurately and safely measure bioelectrical impedance with a simple configuration. The disclosed apparatus 100 includes a measurement processing unit 2 , A CPU 3 and a display unit 4. The measurement processing unit 2 includes a measurement signal generator 72 that causes a probe current Ia composed of an M-sequence code signal to flow through the body B of the subject, an I / V converter 91 that detects a probe current Ia flowing through the body B of the subject, LPF 92, A / D converter 93, and differential amplifier 81, LPF 82, A / D converter 83 and sampling memory 8 for storing the voltage digitized by A / D converters 83 and 93 4,94. The CPU 3 converts the digital voltage stored in the sampling memories 84 and 94 into a voltage value for each frequency by Fourier transform processing, and calculates a bioelectrical impedance between the parts of the living body based on the conversion result. The display unit 4 displays bioelectric impedance and the like.