The General Catalogue of Siku Quanshu follows the Sui Zhi in emphasizing the literary function of the collection, but its discussion is more detailed and comprehensive than that of the Sui Zhi. The General Catalogue of Siku Quanshu places more emphasis on the academic function of the general collection, which is considered to be a source of documents, a source of evidence and proofs, a source of allusions, and a source of history. The General Catalogue of Siku Quanshu also attaches importance to the realistic function of the general collection and believes that some general collections are beneficial to reality, politics, customs and education, and can reflect social habits. Compared with the traditional emphasis on the literary function of the general collection, the General Catalogue of Siku Quanshu pays the most attention to the academic function of the general collection. Its functional view of the general collection has been expanded and changed, and it is more systematic and comprehensive, which is a comprehensive understanding of the academic summary period.