Abstract: The macro-kinetics of diphenyl carbonate synthesis was studied over Pd-Cu/La0.5Pb0.5MnO3 catalyst in a trickle-bed reactor. The catalyst particle size was φ2.0mm×3mm. A power type macro-kinetic model was employed in the present study. The model parameters-were regressed-in the kinetics. The statistic test and its residual error distribution have been made, respectively. The results show that the values calculated by power type macro-kinetic models can be good agreement with experimental data. Furthermore, the model can provide the theory basis on simulation and design of the large scale synthesis of diphenyl carbonate in trickle-bed reactor.