图书资料是科学技术的重要载体,它的内容必然随着科学技术的发展而不断变化、发展。分类法以图书资料内容的学科属性为类目的主要划分标准,是类分图书资料的工具,因此,它的体系结构、类目必须能适应、反映科学技术的发展。另方面,分类法的体系结构、类目受编制者的认识的局限, Book information is an important carrier of science and technology, its content will inevitably change with the development of science and technology and development. The taxonomy is based on the subject attribute of the book information content as the main classification standard of the category and is a tool for classifying the information of books. Therefore, its architecture and category must be able to adapt to reflect the development of science and technology. On the other hand, the taxonomy architecture, the category by the compiler’s understanding of the limitations,