For the purpose of improving the training level of one to one air combat and effect of aviation combat, an evaluation of head-on assault tactics in air combat by mathematic modeling is advanced. Via analyzing and decomposing the basic process of head-on assault tactics in air combat, the mathematic model of head-on assault tactics aviation track of air combat is built up and the optimization aviation track of head-on assault tactics in air combat is defined. Using the analysis of grey relation analysis, based on the similarity of the practical aviation track and the optimization aviation track, and integrating the specific requirement of head-on assault tactics for aviation track at critical moment, the evaluation of aviation track of head-on assault tactics in air combat is gained. This method is verified by an example, the result shows that the method can reflect the tactic requirement for the aviation track effectively in the training of air combat and corresponds to reality.