《于文襄公手札》篇幅不大,以往的研究或是将其作为《四库全书》纂修研究的参考资料,或是从作者于敏中对《四库全书》纂修的贡献角度来进行论述。但《手札》本身涉及的一些细节如《永乐大典》择书标准、丛书类的处理、外省采进遗书的使用、誊录数量的控制这四个方面是以往研究所未曾加意的,现结合相关史料进行阐述,以揭示其对《四库全书》的纂修有不可忽视的影响,丰富我们对于清代中期学术的认识。 The length of the book, “Wenzhong Gongzha Saatchi,” is not very large. Previous studies either used it as a reference material for compiling and researching the Sikuquanshu or from the perspective of Yu Minzhong’s contribution to compiling the Sikuquanshu Discussion. However, some details involved in the “Letters of Sapphire” itself, such as the selection criteria for the book Yongle Dadian, the handling of the series of books, the use of the suicide note by other provinces and the control of the quantity of records, were never mentioned in previous studies. To reveal its influence on compiling the Sikuquanshu and to enrich our understanding of the middle school of Qing Dynasty.