陈和平教授在《图书馆定量管理》(下称《定管》)一书中提出的关于图书馆定量管理的理论,在我国的图书馆学研究领域填补了一项空白,打破了图书馆学研究的传统观念,为图书馆管理提供了科学的方法.书中在图书馆藏书的定量管理方面,提出了藏书的四种结构,即藏书的学科结构、质量结构、年代结构和复本结构。这四种结构分别从不同方面定量地反映了图书馆藏书体系的质和量, Professor Chen Heping’s theory of quantitative management of library proposed in the book “Quantitative Management of Library” (hereinafter referred to as “fixed-tube”) has filled a gap in the field of library science in our country and broke the research of library science , Which provides a scientific method for library management.The book puts forward four kinds of structure of collection of books, namely the disciplinary structure, quality structure, chronological structure and duplicate structure of collection in the quantitative management of library collection of books. These four kinds of structures quantitatively reflect the quality and quantity of the library collection system from different aspects respectively,