Abstract: During the Qianlong-Jiaqing reigns，Han Learning was flourishing，and textual research in Confucian classics and history became popular among scholars．However，the academic differences between the Qianlong and Jiaqing reigns are worthy of our attention． After the early years of the Jiaqing reign，There was a revival of Song Learning and Confucian statecraft tradition，and Han-Song syncretism became the academic mainstream．These Changes were closely related to the civil administration in the QianlongJiaqing reigns． By exploring the causation and influence of the changes，this article aims to further elaborate the academic evolution in the mid-Qing．

摘要： 乾嘉时期,汉学盛行,经史考证风靡士林,但两朝学术差异也值得注意。嘉庆初年以后,宋学渐趋复兴,经世致用传统重新彰显,汉宋调和渐成主流。这些变化与乾嘉两朝的文治政策密切相关,本文就此考察,以期进一步认识清中期的学术衍变。