Environment has been a crucial factor determining the effectiveness of medical treatment, especially for mentally related disorders. The study uses the autistic treatment environment as a case study to examine relevant environmental factors supporting the learning process of autistic children towards an environmental design model, the improvement in behaviour, and be able to stabilize the patient’s emotion. Results from the study are useful for the prognostic study in autism. The final modelling could be applied as a part of special educational programs to extenuate the behavioural and emotional disorders and to improve the social skills in autistic children. Keywords: Physical Treatment; Interior-Environment; Child Autistic eISSN 2514-751X © 2017 The Authors. Published for AMER ABRA by e-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.