Based on the magnetic suspension and balance system (MSBS), this paper mainly studies the problem of designing the position and attitude measurement subsystem of MSBS by CCD array sensors, and other relevant problems including sensors configuration, signal transformation, auto-measurement principle and flow. 5 CCD array sensors divided into two groups are used to measure the 5-degree freedom position and attitude of the model suspending in MSBS, and the multilevel inertial element circuits connected in series are used to transform the pulse width signal into voltage level signal. The position and attitude measurement subsystem of MSBS inputs its measurement signal to control loop and calibration & measurement loop of MSBS respectively. This paper introduces the configuration of 5 CCD array sensors and its measurement principle in detail. Then, the problem of the signal transformation using the multilevel inertial element circuits is discussed, and the theoretical analysis and simulation are presented. Finally, the mathematic principle and auto-measuring flow of achieving the position and attitude of the model suspending in MSBS by CCD array output signal are discussed.