布希政府上台後，對華戰略產生極大的變化。自剛上任時將中國視為「戰略競爭 者」，到九一一事件後又尋求中共對反恐的支持與合作。在反恐階段，中國既支持美國 對阿富汗的戰爭，也曾消極抵制美國對伊拉克的軍事行動，但在處理北韓核武問題，北 京又積極促成六方會談的召開以和平解決。美國藉由反恐在亞太地區的外交與軍事擴 張，則被中國視為對其進行軟圍堵，並採取行動加以反制。 本研究之目的即在於探討九一一事件後美中關係的發展，以釐清此一關係的本質， 究竟雙方是真誠的合作亦或戰略的權宜之計，並探討雙方的戰略意圖與作為，及此一互 動關係對於亞太安全及台灣國家安全的影響。在國際關係理論上，既有霸權與新興強國 的互動關係及影響，向為學者關注的議題，相關的理論包括現實主義取向的霸權穩定 論，權力平衡論及權力轉移論，藉由此一案例的研究，亦可檢驗這些理論的適用性。本 研究將探討自九一一事件至布希政府第一任任期結束的美中互動關係，所採取的研究方 法為歷史研究法及文獻分析法。 The Bush Administration』s strategy toward China has gone through a drastic change. In the beginning of this administration, it considered China as a strategic competitor. It then sough for China』s support and cooperation after the September 11thIncident. During the antiterrorist war period, China has supported the U.S. for its war against Afghanistan but later passively opposed to U.S. military action against Iraq. Then on the North Korean nuclear crisis. Beijing has helped to organize the Six-Part Talks to solve it peacefully. In the meantime, China has considered that the U.S. adopted a strategy of soft containment against it by increasing American military and diplomatic influence around its neighboring area. China has also adopted measures to counteract this strategy. This research project intends to explore the Sino-US relations after the September 11th Incident with an aim to discover the real meaning of this relations, their strategic thoughts and actions, and the relations』impacts on Asia-Pacific security and Taiwan』s national interest. The current hegemony and its relations with the rising strong state has long been an important subject to international theory. Related theories including the hegemonic stability theory, balance of power theory and power transition theory. By conducting this research, I hope to examine the explanatory power of those theories. The research project will use historical study method and documentary analysis method.