The article describes the results of the examination of the lexical side of the speech of children of the senior preschool age with general underdevelopment of speech. In particular, the understanding of questionnaires, instructions, antonyms, abilities to generalize concepts, knowledge of cubs of animals, names of professions and others. The children of this group revealed a violation of the general legibility of speech, numerous expressed distortions in many phonetic groups, the lack of voice modulation; violated all components of speech, both verbal, and lexical, grammatical and phonemic development. The pronounced restriction of vocabulary is noted, children often use words in an inaccurate sense, substituting them for similarity, by situation, by sound composition. Violated the mastery of grammatical forms of speech, overlooked prepositions, incorrectly used endings, categories of numbers, genus. The use of symbols does not lose its relevance at all stages of speech therapy. At each lesson, children encounter symbols. The icons are used in logopedic classes with children with general underdevelopment of speech, mainly for the purpose of developing the lexical side of speech and phrasing. This makes it possible to activate all kinds of analyzers, develops processes of thinking, memory, attention, improves autonomy, perseverance, and it accelerates the learning process much more. It is much easier for the child to learn the concept, when it is not only shown speech therapist on itself, but also marked by understandable to the child. The results of the survey conducted in the form of the game, in general, confirmed that the use of pictogram games is an effective method for the development of speech of preschool children with general underdevelopment of speech.