This paper investigates the use of the μ robust controller for improving control performance of mobile satellite antennas. A robust control system of mobile satellite antennas is presented,  and the μ robust controller is designed according to the mobile satellite antennas systems model.  The effectiveness of the algorithm is verified by the experimental results.  It is clarified that the control performance of mobile satellite antennas is improved and the control system still maintains satisfactory control performance despite the change of road surface condition.