目前,世界上虽然有各种各样的检索方法。但是,归结起来,只有两种:一是主题法,二是分类法。本文打算对这两种检索方法的特点和类型,作一些粗浅的分析比较,同时结合我们工作中的体会,谈一点有关检索方法的选择问题。但由于水平所限,一定会有不当甚至错误之处,请批评指正。一、主题法的类型主题法是一种以规范化的自然语言(即标题),作为文献主题标识和查找依据的检索方 At present, there are various search methods in the world. However, to sum up, there are only two: one is the subject of law, the second is taxonomy. This article intends to make some superficial analyzes and comparisons on the features and types of these two retrieval methods. At the same time, we will talk about the selection of retrieval methods based on our experience. However, due to the limited level, there must be improper or even wrong place, please criticize and correct. First, the type of thematic law Thematic law is a kind of standardized natural language (ie title), as the subject of literature identification and search based on the search side