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In order to solve the nature unstable feature of the magnetic levitation ball system, fuzzy PID control algorithm was designed to realize the stability of the system, and also make the system satisfy the dynamic performance and steady-state performance. In this paper, firstly, the basic principle of magnetic levitation ball system was analysed, and mechanical analysis was made. Then the mathematical model was established, and the nonlinear part of the system is linearized at the equilibrium point. After that, PID algrithm was designed to realize stable control, with high accuracy and low dynamic performance, and while if the value of one parameter changed, system with PID control had low adaptability. Thus based on PID control, fuzzy PID algorithm was adopted, which make the system satisfy the performance of stability, accuracy and swiftness, and meanwhile make the system had the ability to adapt with parameters variation.