Abstract: This paper deals with the impedance cardiogram data processing system on a single board micro computer Z-80. The system makes real time comprehensive analysis of electrocardiogram, cardiac sounds, and impedance cardiogram differential (first order) of the human body. By means of 20 over formulas of blood dynamics including that of computing SV established by kubicek, many parameters reflecting the function of the heart of the human body can be computed, which provides a large number of data for determining the function of the heart. The analyzer for the function of the heart based on this system is one of the unhurt examining tools for physiology parameters and disease study of cardiovascular system.