Abstract: The Siku Quanshu Zongmu, or the Annotated Catalog of the Complete Library of the Four Branches, is an annotated catalog of thousands of works that were considered for inclusion in the Siku Quanshu (Complete Library of the Four Branches). It is the largest official catalogue in ancient China. The editorial board of this voluminous work included a number of top scholars in the Qing Dynasty, such as Ji Xiaolan, Dai Dongyuan ,Shao Yutong and etc. However, the catalog contains some mistakes. This paper aims at discussing the fifteen mistakes in the Siku Quanshu Zongmu, and providing some supplementary materials for it.

Key words: Siku Quanshu Zongmu, Summary, Introduction