抗日战争时期美国对华政策经历了两次重大转变。第一次是以1941年底爆发的太平洋战争为标志,由“中立”、“不干涉”政策向扶蒋容共援华抗日的政策转变;第二次是从1944年下半年赫尔利使华开始,向扶蒋反共的政策转变。本文就这两次重大政策转变的过程及其原因试作一评述,以就教于史学界同仁。 During the War of Resistance Against Japan, the U.S. policy on China went through two major changes. The first was marked by the Pacific War that broke out at the end of 1941 and was transformed by a policy of “neutrality” and “non-intervention” in helping Jiang Rongrong and allied with China to fight Japan. The second was from the beginning of Hurley in the second half of 1944 , To help Chiang Kai-shek’s anti-Communist policy change. This article attempts to make a comment on the process of these two major policy changes and their causes in order to teach their colleagues in history.