the object of the application is method and device for measuring tissue perfusion, in particular peripheral tissues.the way is that the measuring probe (1) with a cartridge heater is placed on the patients body, after which the heater current supply powers to the manufactured regulated supply.the first stage burner is run in test bench measuring current supply.then in the second stage the measurement value current supply increases to values podgrzewaj\u0105cego power supply resulting in heated heating element.and once the final temperature in the third stage, reduces the value podgrzewaj\u0105cego power supply to supply current measurement values.during power heater is measured tension signal measurement at the terminals of the measurement (6b, 6c) the measuring probe (1),after the tension signal is filtered in a first filter input measurement and then amplifies the first amplifier, at the same time, the power supply is designed with a bypass to measuringwhich measures the tension control signal, which is filtered second filter input and strengthens the second amplifier.after the analogue measuring and control napi\u0119ciowe reinforced signals sampled.then discrete reinforced tension measuring signal processing on the digital signal measuringwho runs to the processor (8) and discrete reinforced tension control signal processing on the digital control signal that directs to the processor (8),on the basis of the measured values in which the discrete digital measuring and control signals are calculated according to the instantaneous resistance value rg = heater model (up \/ ub) * (kb \/ kp)where up - digital signal measurement, or digital control signal, the first amplifier kp - strengthening, kb - reinforcement of the second amplifier.and then, based on the resistance value is calculated by the instantaneous heater heater temperature t = (rg -?) \/ (r0 +?) where? - temperature coefficient resistance heater guide.r0 - resistance heater at zero, and based on the calcul