本文从再入大气层弹道导弹弹头运动的解析解着手，找出了在再入点参数一定的情况下，决定弹头运动状态的唯一因素是弹头的弹道系数。为此，本文提出了一种设计弹头伴随重诱饵的方法。按此方法设计诱饵，可使得在整个再入段，诱饵即使不带小型发动机调整姿态，也能保持与弹头相同的运动状态，以此达到掩护弹头突防的目的。 In this paper, we start with the analytic solution of the reentry warhead ballistic missile, and find out that the only factor that determines the warhead’s movement state is the ballistic coefficient of the warhead under certain parameters of the reentry point. To this end, this paper presents a method of designing warhead entanglement bait. According to this method, the bait can be designed to keep the same movement state as the bullet even if the bait is not adjusted with a small engine throughout the reentry section, so as to cover the purpose of bullet penetration.