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Considering the characteristic of the imaging of SAR,the stable platform of radar antenna is designed to guarantee the stability of radar antenna beam pointing.In order to eliminate the influence of the nonlinear and uncertain factors in the stable platform of radar antenna,a fuzzy PID control strategy is proposed for the stable platform control system.Stable platform works by using the principle of reverse motion compensation according to the angular velocity of the aircraft collected by gyroscope.To improve the control effect of stable platform,the optimal design of stable platform controller has been designed by introduced fuzzy control algorithm based on conventional PID control and it dynamically changes PID parameters by tracking error signal.Compared with the conventional PID control algorithm,the simulation result shows that the fuzzy PID control algorithm affected by external interference is smaller and response faster in the application of stable platform revolution control.Therefore,the stable platform of radar antenna based on the fuzzy PID control algorithm has more stable performance.