In this study, State Feedback Control (SFC) method is proposed to control an active magnetic bearing system (AMB). The AMBs employed in this study have two four-pole bearings. The distances between the two can be controlled using the electrical signal from the controller. The magnetic forces are generated under the feedback loop control. The designation of the controller can optimize the control of traditional PID, and the parameters of each state can be detected in the control process. The simulation and experimental results show the high quality of the control strategy, suggesting that the control algorithm proposed in this study is feasible and has strong robustness.