Abstract: The bearing-rotor system with disk will have additional modes, namely the coupled vibration mode between the disk and the shaft. Two-dimensional (2D) finite element method based on beam theory is one of the main methods of rotor dynamic analytical analysis, but it is difficult to consider the influence of the coupled vibration between the disk and the shaft on the dynamic characteristics of multi-disk rotor system. In view of the structural characteristics of the multi-disk rotor of maglev turbine, the angle stiffness and angular damping coefficient were introduced to consider the effect of the coupled vibration on the dynamic characteristics of the bearing-rotor system. The dynamic analytical model of the magnetic bearing-flexible rotor system of maglev turbine was established based on the 2D finite element method using Euler Bernoulli beam theory. Model parameter identification method was given combined with the modal test experiment. Finally, a prototype of a marine maglev turbine was taken as research object, and the correctness of the proposed dynamic modeling and parameter identification method is verified through experiments.