This thesis focuses on the communication abilities of people with autistic spectrum disorders. In the theoretical part of the definition of autism, causes, diagnosis and forms of autism. People with autism spectrum disorders have difficulties in communication, which are manifestations of expressive and receptive language component in verbal and nonverbal communication. For the communication of people with autism spectrum disorders are characterized by certain specific features. The empirical part of this thesis analyzes the level of communication and communication skills of a boy diagnosed with autism from birth to present age of eleven years.