The abstract reveal the problem of methods of meta-linguistic development of older preschool children (general didactic – reproductive, heuristic, problematic, partial-search, research and linguomethodical – practical, theoretical-practical and theoretical methods of language learning and speech development) that will promote children sign language system, understanding of linguistic units with the ability to analyze linguistic phenomena at the level of selection of essential features; with awareness and control over its formation; with the initial development of consciously controlled speech.