To this day, majority of interventional approaches for children with autism spectrum disorder (ASD) are oriented towards the child or its parent with the primary goal of adopting strategies for developing joint attention and communication skills. Still, this strategies are not meeting the needs of parents and psychological stress they are exposed to by raising a child with ASD. Since parental stress level is affected by a number of negative daily events, as well as many protective factors, it is extremely important that the specialist helps the parent to identify both - daily stressors and appropriate types of support suited for the parent, his/her child and the whole family. This study explored the predictors of parental stress in 80 mothers of young and preschool children with ASD in order to identify sociodemographic factors, coping styles, characteristics of the child, social support as well as characteristics of intervention and the therapist that have positive effect on the parental stress level. Research showed that 22% of mothers that have children with ASD perceive severe parental stress levels. Social support, characteristics of the child and avoidance coping were found to be significant predictors of parental stress. Neither sociodemographic factors, intervention, problem-focused or emotional coping were found to have an effect on parental stress level. Furthermore, the study analized characteristics of the therapist and the SLP or educational rehabilitation treatment that families of children with ASD were part of in order to identify characteristics that mothers perceived important and to compare how often they receive them. It was showed that the families most often receive services oriented towards their child, but mothers also find them the most important.