Аннотация:To understand the effects of laser radiation on live cells and tissues it is important to take into account not only the laser parameters but also the temporal and spatial peculiarities of the live objects. The temporal dynamics of the parameters of a live cell or tissue should be taken into consideration when making the prognosis of the effects of any laser. The chronobiological approach allows us to automatically take into account the individual peculiarities and the current functional state of the live objects, which makes it possible to exclude `nonstandard' effects of laser action and to diminish their poor determinability and high variability. Modulation of the intensity of laser irradiation by the signals of registered biorhythms of the irradiated cell or organism enables us to guarantee stable amplification of plastic processes, restoration of the levels of function and biosynthesis