As the first important factor in the process of confronting parents with a diagnosis of an autism spectrum disorder (ASD) is the disclosure of a diagnosis that stands out. The aim of this study was to examine the experiences of parents with the disclosure of a diagnosis of ASD and to investigate the relationship between the level of parent satisfaction with the disclosure of a diagnosis to the characteristics of the procedure – determinants of time and space, characteristics of verbal and nonverbal communication of the professionals and information obtained. The study included 52 parents of preschool children with autism (0 do 7 years) who was diagnosed in previous 18 months. For the purposes of this survey, a Questionnaire for examining parental experiences in the diagnostic procedure of an autism spectrum disorder was designed. The results showed relatively high level of parental satisfaction with disclosure of the diagnosis of ASD. 82,6 percent express their satisfaction on a scale from 1 to 10 with a high score (from 6 to 10). Data analysis showed that there is a statistically significant correlation between parental satisfaction and the presence of positive characteristics of the process of disclosure. Parents were more likely to be satisfied if there were more positive characteristics in the diagnostic procedure, including determinants of time and space, characteristics of verbal and nonverbal communication of the professionals and characteristics of information obtained. Based on the research results and data available in the literature, the recommendations for practice were developed on how to share a diagnosis of ASD.