美国中国学自诞生以来，在书斋和现实之间就有一条清晰的连接线。但关于美国中国学如何影响和改变美国对华认知及对华政策并未得到很好的研究。基于相关档案和原始文献，爬梳半个多世纪前美中关系全国委员会群体走出象牙塔的中国学，可以再现学术上的“现代化范式”如何推动美国各界走出“麦卡锡时代”阴影、理性认识中国，并助力美国对华政策从孤立转向接触的具体历程，进而揭示美国中国学上“知识生产—公共舆论—对华政策”的互动结构，探索美国中国学在理论和实践之间的内在逻辑，为扭转当前美国对华认知误区、促进中美关系健康稳定发展提供借鉴和启示。

Since the early days of sinology in the U.S., there has been a clear connection between theory and practice. However, it remains unclear how sinology has influenced and shaped American perception of China and its China policy. Based on archival data and original documents, this paper sheds light on the efforts made by China experts in National Committee on U.S.-China Relations （NCUSCR） more than 50 years ago. It demonstrates how the Modernization Paradigm in China studies had helped push America out of the long shadow of McCarthyism, which in turn promoted a rational understanding of China, and helped to turn America′s policy towards China from isolation to engagement. Furthermore, it reveals that the interactive structure of sinology known as “knowledge production-public opinion-China policy” can better explain the logic between theory and practice. This paper provides implications for promoting a better understanding of China in the U.S., and for developing a healthy and stable relationship between China and the U.S.