One of the most common disorders in children today is autism. In the definition of autism, there are 3 main signs: the lack of building social relationships; a violation of the ability to communicate and the presence of stereotypical behavior. Among these signs, a special place is occupied by disorders in speech development. It is through speech that communication is constructed and the personal qualities of an autistic child are developed and integrated into society. Therefore, this article attempts a theoretical analysis and description of the lexico-semantic side of speech, in the correction of children with autism.