The transfer function expression of the hydraulic excitation servo control system model was derived, and the system model was established and linearized in AMESim. The system model was identified in MATLAB based on the results of Jacobian matrix operation in AMESim, and the first-order integral gain, natural frequency and damping ratio of the servo valve and hydraulic cylinder were obtained; the verification model was built and verified in Simulink software. The results show that the natural frequency and damping ratio of the servo valve and the hydraulic cylinder obtained by the system model identification correspond to the AMESim simulation model eigenvalue; the output curve of the model verified by Simulink is basically consistent with the output curve in the AMESim simulation, which shows that the method can meet the model identification of the hydraulic excitation servo system.