The diploma thesis The influence of early diagnosis for family of children with ASD deals with problems with autistic spectrum disorders diagnostics. It is focused on families with ASD children. It also maps the period before the diagnosis. The main aim is to show the preceding situation and consequences after the diagnosis of one of the autistic spectrum disorders in the family. The thesis works with both, the psychic impacts influencing family members, but also many other factors. The acquired information is based on the narrative conversation with parents. It speaks about the first displayed symptoms and the attempt to solve the occurring problems. It also speaks about possible seeing doctors, and if so, what specialists and what approaches and diagnoses they met. Last but not least the thesis is interested in those who informed the family about ASD as the first, when it was diagnosed and the change of family life after the diagnosis.