Abstract. In order to improve the overall dynamic performance of mechanical equipment, finite element modeling, correction and parameter identification are carried out by means of the combination of finite element simulation analysis and experimental test. The finite element model correction technique based on response surface method is studied. Based on the experimental modal data, the uncertain parameters in the substructure model are identified. The simulation and experimental modalities are analyzed. The results show that the corrected values of support stiffness 1 and support stiffness 2 are respectively 0.8 and 1.2 times the initial values. At the same time, the errors of modal frequencies are close to zero after iteration. Therefore, the response surface model and the modified procedure is feasible and effective.