The paper deals with the kinetic model of the urea-synthesis process from ammonia and carbon dioxide, compatible with the thermodynamically justified stoichiometric model of complex process. The obtained kinetic equation process, in a complete and in a simplified form, describes correctly the synthesis process in the range of temperatures t = 170-200 °C, molar rations NH3/CO2 2-4, H2O/CO2 = 0-1,2.