The article deals with the formation of the culture of business communication. The role of business communication in the life of society has been determined. The state of research of the problem of business communication within phraseological semantics has been analyzed. A systematic analysis of the semantic structure of phraseological units as part of the phraseological semantic field of business speech has been elaborated. The classification of phraseologisms in the field of business communication has been suggested. Phraseological units in business English communication comprise a vast part. This makes it possible to suggest a classification of these PhUs according to thematic principle. Phraseologisms of the semantic field of business communication are of special linguists’ interest because business and relations among people in this sphere is the main source of income in particular and human existence in general. The conducted research of the phrase-semantic field of business communication has allowed us to establish the semantic potential of the PhUs, forming this field. A person's understanding of the sphere of business and business relations within this sphere is manifested in the lexical and phraseological structure. Having classified the PhUs into semantic groups it should be noted that the most numerous semantic groups are those denoting "person", "work / job", "business meeting", "profit", "loss", "success", "sale", "product", "price", "difficult situation", "financial support".