In order to overcome the influence of various disturbance factors and to improve the control effect in the process of glide and flight, an optimal control method for nonlinear stochastic systems is studied. Based on the general control principle of rocket projectiles flight process, a differential form of attitude dynamics model is established. Taking attack angle and yaw angle as observation variables, and rudder reflection angles as control variables, the state equations, the objective function and the control law are deduced. The detailed expression of the adjoint function is put forward. The optimal filter is designed based on the Riccati equation. Control parameter is designed and simulation analysis is carried out with spread glide control point as the feature point. The simulation results show that this controller system responds quickly and has a good control quality.