冷戰結束後，由於蘇聯的崩解，致使中亞地區權力出現真空狀態。中亞新興獨立的五個國家援引俄羅斯、美國、中國等外力，來協助國家的進步。俄羅斯自詡為中亞的保護者，並且認為中亞為其勢力範圍。美國為霸權擴張、西方式民主鼓吹者，致力於反恐戰爭與中亞資源的開發。中國的崛起需要的是中亞區域的穩定以及中亞各國與中國的相互合作。本研究試圖透過中亞本身內部安全、資源、民族、文化等因素以及外部國際環境變化，來探討俄、美、中三國與中亞五國之間的關係發展與演變。 / After the cold war, the disintegration of the Soviet Union has caused a power vacuum situation in Central Asia. The five newly independent Central Asian states have cited external forces, including Russia, the United States and China, to assist their own countries’ progress. Russia treats itself as Central Asia’s protector, and considers Central Asia under its sphere of influence. As a hegemony expansionist and western-style democracy promoter, the US strives for anti-terrorism and the extraction of natural resources in Central Asia. For China’s rise, China needs regional stability and maintains mutual cooperation with Central Asian states. This study explores Central Asian states’ relationship with Russia, America and China through domestic security, natural resources, nationalities, cultures, and international situation.