The article presents the author’s own tool to diagnose the level of communicative competence in a child with Asperger Syndrome at an early age. The diagnostic tool includes an interview with the parents, the diagnosis site, and exercises to check the functioning of the speech apparatus. The article presents exercises for diagnosing the level of linguistic social, situational, pragmatic, and systemic proficiency. At the end, there is a card for assessing the level of communicative competence of a child with Asperger Syndrome which will help systematize knowledge and prepare an appropriate therapy.