本文从读者目录的检索入手，指出现在读者目录传统检索法的缺陷；现代检索法的可望不可及，从而认为优化的、适合我国图书馆读者的汉字排检法必须符合：①普遍性；②直观性及单纯性；③多容性；④现代性。从理论和实践的角度阐述“声数”检索法的优越性：适应于广大读者；适用于计算机；重号低；简单易学。并应用“声数”检索法对书名目录、著者目录、分类目录的处理做了介绍。 This article begins with the retrieval of readers ’catalogs and points out the shortcomings of the traditional retrieval methods of readers’ catalogs nowadays. The modern retrieval method is hopeless and can therefore be considered as an optimized Chinese character sorting method suitable for Chinese readers. Intuitive and simple; ③ multi-capacity; ④ modernity. From the point of view of theory and practice, it expounds the superiority of the “acoustic number” retrieval method: adapting to readers, applying to computer, low weight, easy to learn. And the application of “sound number” retrieval method to the title of the book, the author directory, classification of the directory to do the introduction.