Abstract: The distributed activation energy model (DAEM) was adopted to improve the analysis technique of the teaching experimental test platform on polymer material pyrolysis kinetic parameters in thermogravimetric experiments. By comparing the thermolysis kinetic parameters of rigid polyurethane foam calculated by the approximate integration method (Coats-Redferm) and the distributed activation energy model, it shows how to obtain the multi-stage variation function of the activation energy of the reaction of polymer materials by perfecting the experimental technique. The experimental results show that the Coats-Redferm method can only obtain the values of the pyrolysis parameters in different atmospheres and at different stages. But it is difficult for the Coats-Redferm method to obtain the switching temperature point of the multi-stage pyrolysis material because the segmentation range of the pyrolysis process is determined artificially. The DAEM model can not only obtain the activation energy value of the polymer material, but also obtain the function of activation energy with conversion rate, which can show the law of polymer materials activation energy in the process of pyrolysis. The research results show that distributed activation energy model can be utilized to improve the thermal analytical capabilities of the teaching experimental test platform and help to enhance the experimental teaching level of polymer material science and engineering majors.