In order to evaluate control tool error is better, put forward an environmental function model correction method. Establish state equations and observation equation, using tracking maneuvering target and observation function model. And then progress kalman filter according to maneuvering frequency adaptive algorithm and windage covariance adaptive algorithm, thereby, get a more accurate apparent acceleration of platform coordinate. Taking certain type missile as example, comparing the simulating results gotten by the classical environmental function model with the simulating results gotten by the modified method, the results show that the modified model has smaller errors.