According to Diagnostic and Statistical Manual of Mental Disorders (DSM-5, 2013), autism spectrum disorder (ASD) is a neurodevelopmental disorder that distinguishes persistent deficits in social communication and social interactions and limited and repetitive patterns of behavior, interests and activities. Due to the increased prevalence of this disorder, the demand for effective education and therapeutic services for this population has also increased. The goal of this research is to examine whether there are changes in social communication in preschool children with an autism spectrum disorder during support. Changes in social communication and beavior characteristics will be measured with BOSCC test. BOSCC test is coded on the basis of video observations of each individual cild interacting with the examiner for an approximate duration of 10 minutes (Grzadzinski i sur., 2016). The results showed that statistically significant differences are not present in any of the examined areas when viewed at the group level, which may be a consequence of the small sample and providing individual and group support to children for a long time. However, when looking at the statistical significance of the results of each child separately, the difference is statistically significant in all children for all three examined areas. Such results tell us that in all three examined areas there was a improvement in all examined children. In accordance with these results, we can conclude that after individual and group support, children improved their communication skills and reduced other behaviors characteristic of autism spectrum disorder.