In order to improve work performance of M aglev vibration test systems,the relationships of operating parameters between different components and system were researched. The working principle of photoelectric displacement sensor was analyzed. The relationship between displacement of transducer and the infrared light area received by sensor was given. The method of expanding the dynamic range of vibrator was proposed,which makes dynamic range of Maglev vibrator doubled. By increasing the amplification of the amplifier,the sensitive photoelectric displacement sensor can be maintained. Two modes of operation of the controller were analyzed. Bilateral work of vibration test system designed can further improve the stability of the system.An object vibration was measured by Maglev vibration test system designed when different vibration exciter frequencies were loaded. Experiments showthat the output frequency measured by Maglev vibration test system and loaded are the same. Finally,the errors of test system were analyzed. These errors of vibration test system designed can meet the requirements of application. The results laid the foundation for the practical application of magnetic levitation vibration test system. The order of improve work performance of M aglev vibration test systems, the relationships of operating parameters between different components and system were researched. The working principle of photoelectric displacement sensor was analyzed. The relationship between displacement of transducer and the infrared light area received by sensor The method of expanding the dynamic range of vibrator was proposed, which makes dynamic range of Maglev vibrator doubled. By increasing the amplification of the amplifier, the sensitive photoelectric sensor can be maintained. Two modes of operation of the controller was analyzed . Bilateral work of vibration test system designed can further improve the stability of the system. An object vibration was measured by Maglev vibration test system designed when different vibration exciter frequencies were loaded. Experiments show that the output frequency measured by Maglev vibration test system and loaded are the same. Finally, the error These errors of vibration test system designed can meet the requirements of application. The results laid the foundation for the practical application of magnetic levitation vibration test system.