The present invention is suitable for the computer technology field, and provides an infrared physiotherapy effect monitoring method and device, a medical device and a storage medium. The method comprises the steps of acquiring a bio-impedance signal of a body physiotherapy area of an infrared physiotherapy user, at the same time, acquiring an electrocardiosignal of the user, analyzing the bio-impedance signal and the electrocardiosignal to determine whether the bio-impedance signal and the electrocardiosignal are both correct, when the bio-impedance signal and the electrocardiosignal are bothcorrect, calculating the frequency of the electrocardiosignal, the frequency of the bio-impedance signal and a primary characteristic frequency, determining whether the bio-impedance signal is causedby the cardiac blood pacing according to the calculation results, when the bio-impedance signal is caused by the cardiac blood pacing, calculating the characteristic of each single cycle of the bio-impedance signal, setting the characteristic of each single cycle as an infrared physiotherapy effect monitoring target factor and outputting, thereby realizing the infrared physiotherapy effect real-time in vivo monitoring by the non-invasive monitoring of combining the bio-impedance signal, effectively improving the comfortableness, reliability and monitoring efficiency of the infrared physiotherapy effect monitoring.