Based on the fuzzy-sets theory,a Fuzzy-PID intelligent hybrid controller is designed to control the power system stabilizer.The advantages of two kinds of control strategies fuzzy logic and proportion-integration-differential,are integrated.It has the inherent advantages of fuzzy logic controller,such as simplicity and efficient nonlinear control effect,as well as the inherent advantages of PID controller,such as rapidity and accuracy.Taking the single-machine infinite bus system as example the result shows that it has sharply improved the stability and the dynamic quality of the power system.