They interested in Music therapy, Chiropractic and Art therapy as sequence. But they are interested in animal therapy with pony and dog as the least. The researchers think that the parents' knowledge about each therapy affects their decision making to choose for their children. Vachira Phuket Hospital has Hyperbaric oxygen therapy (Chamber) which is the new therapy for Autistic children but the parents don't have the knowledge about it. So, the researchers wonder how should we give the information to the parents in order to get the most benefit from this therapy.