The research explain because of the proliferation of ballistic missile technology, the United States suffers the threat of mass destruction weapons. For maintaining the hegemony position of the United States in global region, the United States announces the missile defense project to protect American mainland and the overseas garrison forces security. In the Asia-Pacific region, North Korea lunches the Taep¡¦o-dong 1 ballistic missile in 1998. The United States and Japan cooperate to develop Theater Missile Defense to respond the threat that may suffer from North Korea. China feels anxiety about United States and Japan strength their military relationship. China explains Theater Missile Defense is unstable for Asia-Pacific region. Theater Missile Defense will decrease China strategic nuclear weapon ability. Facing the Taiwan may join the Theater Missile Defense, China is strong objection. Taiwan is one part of China. China puts forward reactions. Militarily, China also understands to develop anti-system weapon is rather important. As increase the ballistic missile, enhance the nuclear weapon and develop the missile defense ability. In addition to enhancing self military force, through the performance of diplomacy and participate in multilateral organizations to reach consociations front of the objection the United States. Keywords: Weapons of Mass Destruction Taep¡¦o-dong 1 ballistic missile Minimum Deterence Theater Missile Defense