An index system of air force communication capability is established by using Analytic Hierarchy Process (AHP) principle, and an evaluation model for air force communication capability is proposed on the basis of Index Scale and Gray Theory. In this model, the weights and confines of indexes are made certain based on Delphi method and Index Scale, then the data of indexes are whiten with the help of triangle whiten function, and the integration clustering coefficients of air force communication capability are calculated. The rationality and efficiency of the model are verified through experiments, which provide new ideas and methods in evaluating air force communication capability.