Abstract: The hydrogenation of 2-methylphenanthrene was studied by group contributions and corresponding state methods to investigate the physicochemical properties of compounds involved. The Gibbs free energy change, equilibrium constants and enthalpy changes of each step of the reaction network at different temperatures were calculated based on the physicochemical properties obtained. The calculations of the product compositions and hydrogen consumptions under different pressures and temperatures according to the equilibrium constants were conducted. The calculation results show that all step reactions are exothermic, their equilibrium constants decrease as the reaction temperature increases. High temperature and low pressure are beneficial for the production of intermediate 2-methyl-9,10-dihydro-phenanthrene and for the reduction of total hydrogen consumption.