The work aims to study the feasibility of using COMSOL Multiphysics to simulate the drying efficiency and thickness of molded pulp products. Based on the theory of porous media, the finite element simulation software COMSOL Multiphysics was used to establish the multi-physical field coupling model of heat and humidity, water flow and non-isothermal flow of dry base moisture content of pulp molded with time. Considering the heat convection of wet air in wet porous media and the heat conduction of porous matrix during drying, the drying efficiency and thickness of molded pulp under hot plate heating were simulated and compared with the experimental results. The simulation results obtained by the inner domain probe of the model were in good agreement with the experimental results, the error range of thickness prediction in the later stage of drying was 0.4%-7.7%, and the difference of drying efficiency prediction was as low as 4.3%. It is feasible to use COMSOL Multiphysics to simulate the drying process of molded pulp.