《四库全书·九家集注杜诗》所用底本，四库馆臣鉴定为宋椠善本。然近代有学者断定此本中杂有赝品，当刻于元明时，非宋刻。但底本与宋本关系究竟如何，尚不清楚。笔者用底本的嘉庆翻印本与宋本等作了校勘，对底本与宋本的异同、嘉庆本与宋本的异同、底本与嘉庆本的异同以及今所传宋本的缺憾等问题进行了考察 “Sikuquanshujiujiu Du Fu” the base used, Siku Pavilion identified as Song Shan rare book. However, there are scholars in modern times conclude that there are fakes in this book. When engraved on the Yuan and Ming dynasties, they were not inscribed on the Song dynasty. However, the relationship between capital and Song is exactly what is still not clear. The author makes a collation with the Jiaqing version of the original copy and the Song version, examines the similarities and differences between the original version and the Song version, the similarities and differences between Jiaqing version and the Song version, the similarities and differences between the original version and the Jiaqing version, and the defects of the current version