This paper is intended to present the theoretical analyses on automatic indexing, which is vital in the process of constructing a thesaurus browser, and clustering algorithms to construct hierarchical relations among terms as well as the methods for the automatic construction of a thesaurus browser. The methods to select the index term automatically in the web documents are studied by surveying the methods for analyzing and processing meta-data which conforms to bibliographical roles of traditional paper documents in web documents. Also, the result of the study suggests to adding or involving the meta-data in web documents, using the meta-data automatic editor because meta-data is not listed in most of the web documents.