On the basis of the variable pitch control principle of wind generating set, the synchronous control scheme to optimize the control parameters was proposed in the mode of deviationring coupling with the advantages of bacterial foraging algorithm, in order to study the synchronous performance of multichannel variable pitch system of the independent 25 MW wind generating set with different parameters in operation. The results show as compared with using adaptive genetic algorithm, the control scheme has good robustness and high synchronous accuracy, which can realize nondeviation tracking to the input signal.