The paper deals with the issues of modeling of polycentric polymerization of diene rubbers on ion-coordination catalysts. By applying the kinetic approach to modeling, mathematical models of the polycentric mechanism for batch and continuous reactors are constructed. In this case, for batch reactors, polycentricity can be manifested as a possibility of simultaneous action of several types of active centers in the mixture, differing from each other by kinetic parameters and molecular characteristics, including rate constants of elementary stages. For continuous reactors, a mathematical model for a cascade of reactors with a polycentric mechanism of polymerization is constructed, taking into account, in addition to the kinetic module, the hydrodynamic and energy modules. The present results of computational experiments show the reliability of the use of polycentric models to describe the processes under study.