Based on the parafoil system model with six degrees of freedom,aim at the plane flight path tracking problem,the existing predictive controller is improved.A control mode is proposed,which switches between fuzzy control and generalized predictive control.According to the cross track error,when the yawing angle error of the parafoil is bigger,the fuzzy controller is applied until the error attains a small range that has been set.Then,the fuzzy control is switched to generalized predictive control,which can c...