The anti-missile battle case is the precondition and foundation of generating the anti-missile scheme, optimizing resource and improving the validity. This paper, firstly, analyzes the position and application of the battle scheme in the BM system; then, by combining the characteristics of CBR, deeply analyzes the four key problems of battle case's expressing, index, matching, adjusting and studying. Finally through a matching example, a conclusion is reached that the generation technology is effective in application to the BM system, which can provide a decision support and theory basis for the determination of a real time anti-missile scheme.