A new type of magnetic fluid bearing was proposed,which used electromagnetic suspension bearing as the main support and hydrostatic support as the auxiliary support to realize dual support.It can be adjusted according to the needs.The finite element analysis model of magnetic fluid bearing was established.The flow field,temperature,stress and strain distribution of the bearing were obtained through the fluid solid thermal coupling solution.By adjusting the structural parameters (oil inlet hole diameter,coil turns) and operating parameters (input current,oil inlet flow,rotational speed) of the bearing system,the finite element modeling was carried out respectively.The influence rules of different parameters on bearing temperature rise and stator thermal deformation were solved by simulation with ANSYS software.The results show that the maximum pressure caused by the fluid in the oil inlet hole is 1 MPa,and the maximum flow velocity of the fluid at the oil film is 0.8 m/s.The temperature distribution of the bearing stator is symmetrical,which is conducive to heat dissipation.The research results provide a theoretical basis for the optimal design of the magnetic fluid bearing system.