Karl Bühler was one of the leading theoreticians of linguistics of the twentieth century. His masterwork Sprachtheorie (1934) quickly gained recognition in the fields of linguistics, semiotics, the philosophy of language and the psychology of language. Bühler’s theory is divided into four parts. Part I discusses the four axioms of language research, the most famous of which is the first, the organon model, the base of Bühler’s instrumental view of language. Part II treats the role of indexicality in language and discusses deixis as one determinant of speech. Part III examines the symbolic field, dealing with context, onomatopoeia and the function of case. Part IV deals with the elements of language and their organization. In actually, in linguistics he is only known for his organon model of communication. Therefore, the purpose of this paper is to focus on the concept of axioms presented by Bühler and to examine the basic framework he intends to develop for linguistics.