We carried out spectral analysis of variability of 6 parameters of hemodynamics (cardiac rhythm, stroke volume, ejection fraction, amplitude of pulsation of the aorta, amplitude of pulsation of microvessels of foot, systolic arterial pressure). We created a classification of oscillatory activity of these parameters on the basis of values of total power of spectrum of variability of parameters of hemodynamics in 4 frequency ranges. In arterial hypertension we revealed changes of total oscillatory activity of heart rhythm, ejection fraction, amplitude of pulsation of microvessels of the foot finger.