The author describes the main etiological causes and theories on the pathophysiology of autism spectrum disorder (ASD); he, also, describes the
contents of the project: "The Garden of Colors", based on the principles of the: "Garden Therapy" integrated with neurosensory therapies, dedicated to children with ASD, living in Scampìa neighborhood (Naples), organized in the garden of NPI district "M. Sciuti", D.S.-28-ASL-Napoli 1 Centro.
Keywords: Autistic spectrum disorder (ASD), neurodevelopment, system theory, neurosensory therapies, the Garden of Colors