在生物组织复阻抗谱测量中,通常采用四电极测量方法,相邻驱动电极和测量电极导联线间存在寄生杂散电容,本文研究了这一杂散电容对组织复阻抗实部和虚部测量精度的影响。结果表明:杂散电容在高频时将引入测量误差,而且随着电容值的增大,引入的测量误差越大,这种杂散电容对复阻抗虚部测量精度的影响尤为显著。 In the complex impedance spectroscopy measurement of biological tissues, four-electrode measurement method is generally adopted, and there is parasitic stray capacitance between the adjacent driving electrodes and the measurement electrode lead lines. In this paper, the stray capacitance on the real part and the imaginary part of complex impedance The impact of measurement accuracy. The results show that the stray capacitance induces measurement error at high frequency, and the larger the capacitance value is, the larger the measurement error will be introduced. This stray capacitance has an obvious influence on the measurement accuracy of the imaginary part of the complex impedance.