墨家关于进攻和防御 ,消灭敌人和保存自己的军事辩证法思想 ,主要体现在“剑犹甲 ,死生也” :进攻和防御 ,消灭敌人和保存自己的辩证法 ;“守则固 ,诛则强” :积极防御的战略原则 ;“守城者以亟伤敌为上” :积极防御的战术原则等三个方面。墨家的军事辩证法思想 ,反映了战争的矛盾、本质和规律 ,是其积极防御的战略战术原则的哲学基础 ,对现代和未来的人民防御战争、反侵略战争颇具启迪意义 The Mohist ideology of military dialectics about offensive and defensive purposes, the elimination of the enemy and the preservation of oneself are mainly reflected in the “sword Jujia and the Soup of the Dead”: the attack and defense, the elimination of the enemy and the preservation of their own dialectics; The strategic principle of defensive; the defensive by the enemy in an urgent need: the tactical principle of active defense and other three aspects. The military dialectics thinking of the Mohism reflects the contradictions, essences and laws of the war. It is the philosophical basis of the strategic principles and tactics of its active defense. It is of enlightening significance to the modern and future people’s defensive war and anti-aggression war