The article is devoted to the study of the kinetics of the ethylbenzene dehydrogenation process in a two-stage adiabatic reactor. The analysis of chemical reactions occurring in parallel with the main reaction of styrene formation was carried out, on the basis of which a number of assumptions were made, on the basis of which a kinetic scheme was compiled that describes the mechanism of chemical transformations during the dehydrogenation process. A kinetic model of the process has been developed. The dependences of the change in the concentration of the starting substance were obtained. The adequacy of the mathematical model of the process was checked.