本文以分析美国2010版《四年防务评估报告》为切入点,对奥巴马上任后美国军事战略调整变化的整体情况进行了梳理,指出奥巴马上任后美国军事战略总体上继承了小布什任内美军谋求绝对军事优势的主旨,并仍然强调倚仗军事力量追求最大化国家利益的战略诉求,但与以往相比,呈现出更加务实、更加突出当前任务、更加强调跨部门和跨国合作等新特点。 Based on the analysis of the US 2010 edition of the “Quadrennial Defense Review Report”, this article sorts out the overall situation of the U.S. military strategy readjustment and change after Obama took office. He pointed out that after Obama took office, the U.S. military strategy as a whole has inherited Bush’s tenure as the U.S. military Absolute military superiority and still emphasize the strategic demand of relying on the military forces to pursue the maximization of national interests. However, compared with the past, it has shown more pragmatic, more prominent current tasks and more emphasis on new features such as cross-sectoral and cross-border cooperation.