According to the force and correction characteristics of fixed wing canard two-dimensional correction projectile, the correction strategy of “repair and stop” and the algorithm of perturbed impact point inference are proposed, which can effectively reproduce the correction process. The mapping relationship between aerodynamic forces such as lift and steering moment and Mach number and angle of attack is derived. The dynamic model of correction projectile in exterior ballistic flight environment is established, and the correction process of rudder is simulated. A two-dimensional trajectory co simulation system including trajectory simulation, aerodynamic simulation, dynamics simulation, rudder attitude measurement and control simulation is constructed. The evaluation of the final impact point by process parameters such as correction time, correction angle and correction times is obtained, and the correction results under different external interference environments such as cross wind are given. Simulation and experimental results verify the effectiveness of the proposed method.