《四库全书》是我国古代乃至十八世纪中叶世界上最大的一部丛书。初缮七份,分庋七阁。其命运多戕,未及百年,已毁其半。书成后有四阁相继惨遭兵火,至今完整保存者仅三阁而已,经此事变,四库研究遂大受影响。今人之于《四库全书》,以国宝待之,有诸多学者进行研究,并形成“四库学”。然在“四库学”研究之诸问题中,尚有许多未有定论。种数问题,其一也。其始,《四库全书》编纂 The Sikuquanshu is the largest series in ancient China and mid-eighteenth century in the world. Seven copies at the beginning, divided into seven houses. The fate of many, less than a century, has destroyed half. Four books after the book has been trampled by the arson, the integrity of the depositor has only three pavilions, after this incident, the Siku research greatly affected. Today in the “Sikuquanshu” to the national treasure to be, there are many scholars to conduct research, and the formation of “four library science.” However, there are still many inconclusive issues in the study of the “Four Treasuries”. The number of species, one also. The beginning, “Si Ku Quan Shu” codification