The author introduces cognitive behavioral therapy and explains its importance for the treatment of children with autism spectrum disorders. He covers the learning and therapy methods needed and explains how they can be applied in practice. For example, parents of children with challenging behaviors are given tips on how to better understand their child, how to use elements of cognitive behavioral therapy in specific situations and how to avoid difficult situations from the outset. In addition, a possible approach to anxiety disorders is presented and how children with autism spectrum disorders can learn social skills.