In the ground air defense fighting, the opposability between the ground-to-air missile and air object is a dynamic opposed process. By estimating the state of a missile, the efficiency of object maneuvering is gained, and the highest efficiency is taken as the optimized maneuvering. In this paper, by analyzing the maneuvering method of object, the maneuvering strategy is presented based on the highest efficiency. The simulation result shows that the effect is good.