The paper is devoted to the construction of the Russian thesaurus on Corpus Linguistics. The linguistic resource involved in research is the Russian corpus on Corpus Linguistics developed in St.-Petersburg State University together with the Institute of Linguistic Studies and different vocabularies. The semi-automatic terminology extraction is performed with the help of the linguistic and statistical tools which allow generation of the lists of single-word and multi-word terms provided with frequency data and lexical-syntactic patterns. The lexical-syntactic patterns are used in the analysis of the contexts which contain the definitions of the terms, expose the relationships between the terms, provide their synonyms, translation equivalents, etc.