Abstract: An integral inference method for missile hit accuracy is presented. Combining the simulation results of missile hit accuracy and the miss distance experiment data, the method can totally infer the miss distance experiment data of missile in various launching conditions. Furthermore, it can establish the mean, the variance and the hit probability estimators, and give their confidence limits and intervals in each launching condition. Compared with traditional methods, this method not only has higher precision, but also solves the problem of missile fire accuracy, dispersion and hit probability assessment with only one miss distance experiment datum in a launching condition.